Large X-Heights = More readable?
Someone explain this to me:
Everywhere I look, people declare that typefaces with large x-heights are more readable than something with small x-heights. For instance, many people don’t like Futura for body copy because of the long ascenders/low x-height (aside from the sans/serif debate). They say it breaks up the color too much. Same thing for other typefaces with low x-heights like Venetians.
But that doesn’t make sense to me. Presumably, the larger x-height makes the letters appear larger. But that means that you need to increase the leading proportionately to compensate. If you used a typeface with a low x-height at a larger point size, wouldn’t you basically have the same results?













13.Feb.2007 11.18pm
Yes.
:)
14.Feb.2007 12.23am
Ok, bad question. I’m looking at a Mac Rhino typeface called Tarocco. The description says this: “Tarocco is a traditional book face. Its rather tall x-height improves readability.” As compared to what? If you take this at a smaller point size with a larger leading, and compare it to something with a low x-height but smaller leading, doesn’t the color and readability of the text remain the same?
Or what about this sample? Which is more “readable,” solely based on x-height?
14.Feb.2007 12.25am
It isn’t directly proportionate. A typeface with a large x-height may need more leading, but it’s still more efficient.
In your example, Utopia could be set at 14/17 and still be as readable as Metropolitan while occupying less space. You can’t reduce the leading on Metropolitan or your ’cenders start to knock.
14.Feb.2007 12.34am
Isn’t the term x-height outdated anyway? In hotmetal it made sense but today we can choose type size and leading freely so why not take the x-height as given and then speak of cap height and ascender/ descender length?
14.Feb.2007 12.37am
True, Tim. But “x-height” doesn’t take as long to say or type and the result is essentially the same.
14.Feb.2007 12.45am
So tell me how decreasing leading increases readability? And even if it were 14/17, the only difference is that you can cram more text onto a page, which is not necessarily a good thing or a bad thing, depending on circumstances, for readability.
In and of itself, how can someone claim that large x-height increases readability, as so many type foundries insist?
14.Feb.2007 12.53am
Maybe I wasn’t clear. I wasn’t saying that decreasing the leading improved readability, I was just implying that you could decrease Utopia’s leading and it would still be as readable as Metropolitan in a smaller space.
> how can someone claim that large x-height increases readability
Yeah, that statement isn’t very clear. Instead: “Tarocco is very space efficient due to its large x-height. Set more text than you could using traditional typefaces without sacrificing readability.”
14.Feb.2007 1.00am
“Tarocco is a traditional book face. Its rather tall x-height improves readability.”
DOn’t believe everything you read!! Those font boys will say anything to get a sale.
Muzz
14.Feb.2007 1.05am
Muzzer’s such a cynic! Cut Hattenbach some slack. English is not his first language.
14.Feb.2007 1.56am
Nah… Muzzer’s totally right ;-)
English IS my first language, but I’m a font boy, and I’ve written far more obtuse prose to try and generate sales!
14.Feb.2007 4.41am
Hi,
Sorry if I’m confusing anyone. The fact that “one thing” could be expressed in several different ways and that the “typographic language” itself is sometimes diverse could make things complicated.
And yes Muzzer, even if type design mostly is driven by passion and for myself even work like a drug, you do have to live as well. I could think of many other more prosperous things to do. :-D
14.Feb.2007 9.04am
I hope no one thinks I’m pointing fingers here. That’s seriously not my intention. I’m just very curious as to what the effect of x-height to readability really means in practice.
14.Feb.2007 10.15am
No worries Stefan Mate! We all have to make a crust. ” I could think of many other more prosperous things to do. :-D” Is it not really working out too well? I reckon the font world would be a hard one to make a crust in.
14.Feb.2007 10.56am
It’s a very interesting question, Dan. I’m glad you posed it. We can examine low-res images here, but the best way to test the relationship between x-height and readability is to print various typefaces at various size/leading settings. I will post a PDF when I have a moment.
14.Feb.2007 11.02am
Typographers aren’t generally concerned about the issue of readability and x-height if they have some space to play with. So the statement should be taken to refer to the situation where there is copy-fitting pressure to squeeze a lot of words into a layout and not have the text look too small to read, especially to boomers and older.
So in that sense, I think Stefan is pushing it a bit, and in fact has things backwards.
Many of the traditional book faces, such as Bembo, have small x-heights.
And of all the Garamonds, the one with the biggest x-height (ITC) is least suitable for book work.
The reason is that books have a wide measure, and therefore need generous leading between lines. A large x-height face looks dull and flat in that kind of layout, like a lot of horizontal bars. You need the play of extenders to enliven the page.
14.Feb.2007 11.09am
This is a complex issue. Almost nobody has an adequate grasp of it, and
too many people just use it as an excuse to further their canned stance.
hhp
14.Feb.2007 11.12am
Nick, thanks for the reminder that setting has everything to do with typeface selection. Faces with large x-heights definitely work better with shorter line lengths, such as in a newspaper or brochure.
What sort of work do you do, Dan?
14.Feb.2007 11.16am
hhp
14.Feb.2007 11.20am
An interesting side issue is the question of what distance the x-height is compared to: ascender, descender, cap, or em.
The trend in news faces, since Olympian, really, has been to differentiate the cap and ascender height, reaching the present extreme in faces such as H&FJ’s Mercury, in which the x-height is small-to-average in relation to the ascenders, but large in relation to the caps.
But context is crucial, newspapers and books are poles apart.
14.Feb.2007 11.21am
Hrant, am I thinking what you’re thinking?
14.Feb.2007 11.26am
Impossible.
14.Feb.2007 11.29am
For those of us who don’t read minds ... care to explain?
14.Feb.2007 11.30am
Not impossible, just very unlikely. :-)
—
Do note that those are only quasi-numerical.
It’s the general shapes of the curves that counts.
The 0-1 in “x-height” is in relation to the ascender height.
V: Visibility (mostly size)
D: Decipherability (non-scalar)
L = V + D: Legibility (non-immersive)
R: Readbility (the hard one)
hhp
14.Feb.2007 11.31am
I come from a news design background, so I can appreciate several factors of large x-heights. Economy of space is one. Having things set in narrow measures means you can bump the leading down just a tiny bit. Having larger counterspaces to offset the effects of cheap newsprint is also a good thing.
But readability is not something inherit in any of these.
14.Feb.2007 12.22pm
[Edit:This was cross-posted with Nick & Hrant’s interesting observations.]
I am also interested in the relationship of readability and economy in type design.
With a larger x-height, you will generally get higher legibility at smaller sizes. However, from what I’ve learned so far the x-height is is only one of a number of interrelated factors, and that in fact determining what is the best ’value’ in terms of the combination of readability and economy is quite complex.
If you normalize two faces so that their x-heights are the same on the paper, you will find the following make a difference to the readability-economy issue.
1. Set width.
The length of a lower case alphabet in different fonts will be very different, even when their x-height are made the same. Eg. Baskerville is wider than Times New Roman. The narrower font would be more economical, other things being equal (which they never are).
2. Ascenders and Descenders.
If you use less leading, you can get more letters on the page. The length of the ascenders and descenders will limit how tightly you can lead, as Stephen notes above. However there are other factors that also affect how tightly you can lead with good readability so this may not in fact be an advantage.
3. Darkness of the typeface. I just learned this from Mitchell & Wightman’s ’Book Typography’. They compare Quadraat, a dark face with a relatively large x-height and Spectrum, a light face with a relatively smaller x-height. Quadraat requires more leading to look not excessively dark on the page, and Spectrum needs to be relatively tightly leaded not to look too light. In their illustration 11/15 Quadraat and 12/14 Spectrum are about equally readable, and Spectrum ends up being more economical, even though it has a smaller-x-height.
4. Optical Size. What makes this issue particularly tricky is that the trade-offs are different at different optical sizes. For example, if you go down to 9 point, probably Spectrum will be not very readable, and Quadraat will shine.
In general my feeling is that at smaller text sizes, large x-height becomes a distinct advantage, but at larger text sizes, it can be even a disadvantage. And then at display sizes it can even reverse again. So in fact this issue is really complicated.
I haven’t even mentioned letter spacing and sans-serifs, both of which add more wrinkles.
I would be interested in the observations and experience of others in handling this readability-economy issue.
14.Feb.2007 8.53pm
”...I began by getting myself a fount of Roman type. And here what I wanted was letter pure in form; severe, without needless excrescences; solid, without the thickening and thinning of the line, which is the essential fault of the ordinary modern type, and which makes it difficult to read; and not compressed laterally, as all later type has grown to be owing to commercial exigencies.”
Aims in founding the Kelmscott Press, William Morris, 1895
Interesting how the original post asked only about readability, but economy immediately crept into the discussion.
In academic textbook publishing, “economy” tilts the other way. Publishers are desperate to produce a physical object that appears worthy of a $125 price tag, with no regard for the future back health of students slinging bookbags over one shoulder. Considerably down-market, technical how-to guides e.g. “Make Windows Sing” are bought by the word, sold by the pound. Economy in the sense discussed here isn’t at issue.
If one designs without concern for economy, there’s an optimal size and leading that shows each font at its best. Then, and only then, one can ask which font provides the most comfortable long-term reading. I’d say the x-height sweet spot is clearly somewhere in the middle. For example, Lucida Bright is often used in top-drawer technical guides, but to my tastes its x-height is too large.
To me, a small x-height font like Bernhard Modern screams “I’m upper crust!” I can’t get past that, I wouldn’t want it on anything but a concert invitation. Yet, it’s surprisingly readable. Go figure.
Remember that much of the world does just fine reading arabic, which at first glance looks like a flatlining EKG, with barely any x-height at all.
I’d say that what goes on within the x-height strip determines much of readability. The height of that strip may be largely immaterial.
14.Feb.2007 9.08pm
If one designs without concern for economy, there’s an optimal size and leading that shows each font at its best.
That begs the question—the opposite is also true.
15.Feb.2007 6.32am
Dave, Nick finds your post question-begging; I am just confused by it. You say that there is an x-height ’sweet spot’ for reading comfort, but you also say that for readability “the [x] height may be immaterial”. These seem to me to be saying opposite things.
Nick, I find your comments on ITC Garamond and on Newspaper type extremely interesting.
One of the things that I have admired in metal Caslons is the way they could be set with relatively little leading, and form a lovely woven texture on the page.
You said wrote that this advantage of longer extenders is important in longer measures, such as in a book. But I am wondering whether the failure of ITC Garamond as a text type is more because of other features.
Carl Crossgrove wrote in an interesting post in another thread that the problem with ITC Garamond is that it has a huge x-height suitable for a very small size, but the tight spacing, fine serifs and other details suitable for a display type. I’m wondering whether its problems in text aren’t for these reasons. If Carl’s analysis is correct, I would expect ITC Garamond also not to work in narrow columns for extended text.
What do you think the other factors are, in addition to extender height, in making a type work for narrow columns on one hand, and broad columns on the other?
My other question concerns the reducing of cap height that you pointed out in newspaper type. What is the advantage of it in your view? Have you followed this model in your own newspaper types?
15.Feb.2007 7.08am
It is quite difficult to fairly compare readability using x-height variables without the economy issue as part of the equation. Type is never set in a vacuum. there are always other factors which determine the range of useable possibilities. The old “X-height uber alis” days of ITC proved that Porgy was right, “it ain’t necessarily so”. You have to factor in usage and objective along with the physical determinates such as line length, leading, cap height, and so on. Better to query, what am I asking this setting of type to do, and seeing if it succeeds at that than to pluck one factor out and give it holy grail status.
ChrisL
15.Feb.2007 7.19am
BZZZT! Mixed metaphor penalty! Lose 10 points for using ’Porgy’, ’über alles’ and ’Holy Grail’ all in the same paragraph :)
15.Feb.2007 7.40am
I belong to the “Shepard’s Pie” school of writing William :-)
ChrisL
PS: n e x t t i m e i w i l l l e t t e r s p a c e l o w e r c a s e
15.Feb.2007 10.40am
William,
I had a lot of trouble with ITC Garamond as a text face in the 1980s, photoset, it was too fine and fell to pieces easily during production. So I concur with your comment about its fine-ness being problematic. The same thing with Galliard. However, ITC Garamond was great in heads, and for that genre of 1980s ad with 18/16 pt text type wrapped round a close-cropped image. (Yes, it is possible to reverse-lead ITC Garamond! — although my favorite for that kind of setting was ITC Berkeley).
It’s also the weight of capitals that has been reduced in news text type, as well as their height.
In general, I think that solid leading has become unacceptable, across the board. It used to be a quite legitimate setting style (Morison’s “Principles” was set solid in a large Bembo), but no more. Perhaps we can put the blame on Microsoft, and the 20% leading default of word processors, which, now that everyone with a computer is a typesetter, has become the norm.
Also, now that designers have become typesetters, and are not a s skilled as the pros of yore, an easy way to make your text type look upscale, professional and artful, is to lead it copiously.
15.Feb.2007 12.44pm
I recall reading somewhere that the early scribes wanted a heavy, textural pattern on the page, hence the name “text.” Keeping wordspacing tight and setting solid are two definite ways to add that quality.
But I imagine that only applies to oldstyle fonts with low x-heights, since cramming some types solid, like Times, makes for unreadable bla.
It would make sense then for people setting metal to want lower x-heights, since setting solid would make things faster to arrange.
16.Feb.2007 2.12am
still need more proof about x-height.....
http://www.clearviewhwy.com
16.Feb.2007 8.33am
Nearly non sequiter: Actually, it was the character Sportin’ Life, a drug dealer, expressing his doubt about statements in the Bible in the song “It Ain’t Necessarily So”—in the opera Porgy and Bess.
Remember the vogue in the early 70s when ITC blew up the x-heights of fonts, creating such monstrosities as ITC Garamond, where the counters were so wide as to confuse letterspace with counter, strokes mashing into each other, impeding legibility. As well expressed here by others, legibility and spatial efficiency are controlled by a variety of variables.
16.Feb.2007 10.04am
I only have a few observations to add to this fascinating discussion. As usual, largely those of a reader of books.
My basic point, I think, is that so far as I can see all generalizations about readability are suspect. So much depends on the context: what measure something is set at, how it is printed, what sort of type the reader of that sort of work is used to seeing, how the book is printed. Take even ITC Garamond. Quite close to universally loathed, the acme of unreadability. But I remember having to spend quite a lot of time with the computer books published by O’Reilly, which were set in ITC Garamond, and I don’t recall them as unreadable at all. For their purpose, given the overall design and the way you read that sort of book, they worked very well.
So generalizations are suspect. But, having said that, let me offer one of my own. For extended reading most types that are in any way extreme tend to be difficult. Maybe that’s because they are obtrusive. Maybe it’s for some other reason. For that reason I would be suspect of statements like “larger” (or “smaller”) X for greater readability ... because I would tend to think that “very average” X was likely to make, in general, for good readibility, allowing for a fairly wide variation. (This applies not just to x-height but to other features too: “very dark for good readability”, “very light for good readability”, “very low cap height for good readability” etc etc: all suspect.)
And finally, on the topic of economy, I do think that one tends to find that a saving in one area tends to mean a loss in another. In general (I don’t say always), large x-height tends to want more leading, so that the fact you can set in a small nominal point-size does not save so much space as you might at first hope. And compressed type means you can fit more letters in the line, but again tends to call for slightly more leading (or a shorter line) to prevent doubling, etc etc. From that point of view I suspect that large x-height types are most useful from the point of view of economy where neither readability over an extended period nor beauty is really a concern, but where cramming in matters. In other words, where one’s concern is not so much readability, at least over any extended period, so much as legibility (e.g. dictionaries, tables, . For “classic” book-width type intended for extended reading, I suspect that large x-height letters are no great advantage.
And I think they’re ugly ... but maybe that’s just me.
16.Feb.2007 10.30am
All the variables of typesetting/printing affect how comfortable a text is to read; not only x-height, leading, width, etc. but length of text, paper texture, ink coverage, ink color, contrast, show-through, measure, page size, etc. It is probably not worth making any generalizations (despite the constant demand for them) in this area. Within the actual typeface, I think the most important variables are these (for a general-use book face):
Weight/color; is the type strong on the page, not thin and light?
Contrast: Not too high (Bodoni), not too low (Futura)
Default spacing: the sweet spot where the words knit together evenly and clearly and word spaces are “just right”
Clear, strong, differentiated character shapes; ambiguity is bad
Cap/lc/extender proportions: not aboslute numbers but a pleasing relationship
Even with these variables optimized, there are the intangibles; is the type too showy, is there any movement or activity in it, or is it static, regular, dull? Some of the most comfortable, and I might even say inspiring, text faces out there have moderate x-height, low contrast or some other “flaw” but so much about them is ideal, we enjoy reading even chemistry textbooks set in them. Because of this, I think it’s useless to pursue the discrete ingredients of readability. See Michael Pollan’s recent articles on “nutrition” in the NYT for a parallel.
16.Feb.2007 10.57am
Interesting post, Carl.
>Weight/color; is the type strong on the page, not thin and light
I would just add that type can be too black as well. Hitting the middle, sweet spot is the goal—and that as you say relies on the printing process as well as the type.
>not aboslute numbers but a pleasing relationship
In this context, Walter Tracy’s comment (Letters of Credit p. 51) is worth noting:
“For my own taste, if x to h is a proportion of about six to ten a face will look refined and be pleasant to read. If the x height is much less than that the face may be stylish but will be unsuitable for a long text. A larger x-height conduces to dullness.”
The only qualifier I would add that is that for small point sizes, greater x-heights seem to be an advantage for readability.
16.Feb.2007 11.16am
As prompted by another thread, on classical proportions, be it noted that the ratio of x-height to cap height in the classic text faces is at or close to the golden mean.
16.Feb.2007 1.33pm
“it was the character Sportin’ Life, a drug dealer, expressing his doubt about statements in the Bible in the song “It Ain’t Necessarily So”—in the opera Porgy and Bess.”
Martay,
I know it was Sportin’ Life but was trying to shorten my post, sorry.
“Remember the vogue in the early 70s when ITC blew up the x-heights of fonts, creating such monstrosities as ITC Garamond,”
That is exactly what I meant when I said “X-height uber alis” days of ITC “
ChrisL
20.Feb.2007 12.41am
Here’s an interesting insight from Jean-François Porchez regarding the design of his Le Monde typefaces:
“He had researched newspapers and their use of type, from The Times to Le Midi Libre and the current Le Monde. He found that the print in Le Monde - composed in Times New Roman, which The Times of London itself abandoned in 1971 - was less than ideal compared to the other papers’. The types used nowadays had greater x-heights and smaller capitals and ascenders. Because little of the text is set in capitals, there was no need to make them monumental as Stanley Morison’s committee had done for Times New Roman in 1931.”
20.Feb.2007 6.19am
monumental
Nice term.
For news text trends, note that the first of Linotype’s “Legibility” faces of the 1920s, Ionic, has a massive x-height — proportions of a micro-type, blown up.
It also has caps with much bolder stems than its lower case, which was traditional and customary. I believe that it was the application of kerning tables to text setting in the early 1970s phototype, and the tight look that infatuated typographers for a couple of decades, that prompted the abandonment of monumental capital proportions, and the move to more similar stem weight between the cases — the terrible grayness of photoset text. During the digital era, the balance is somewhere between metal and photo era.
20.Feb.2007 6.32am
There are two potential reasons to make caps stand out: to make it easier to pick out proper names when “scanning” (as opposed to reading) a text; and to give all-caps setting more punch (since the point of it is typically punch). Some aspects of these reasons are less relevant now, but most remain.
One thing I’d like to know BTW is exactly why
Dan gave his new Morris Sans such dark caps.
hhp
20.Feb.2007 6.39am
Another reason for the heavier stem weight of caps is to get a similar “ink coverage” (overall weight) as lower case. With this principle, the smaller the capital, the less heavy its stem weight need be.
20.Feb.2007 6.47am
Nick, in light of the Porchez quote—thanks, Dan—and your interesting analysis, I am interested in comparing the new Matthew Carter Le Monde faces which have replaced the Le Monde Journal by Porchez. Here is an article on the change. I will try to get some screen grabs on both the Porchez and the Carter faces.
20.Feb.2007 6.50am
> ... to get a similar “ink coverage” (overall weight) as lower case.
But that’s on a different magnitude (smaller) and
more significantly of an opposite intent: even color.
hhp
20.Feb.2007 7.00am
Well, I don’t think that darker caps really contributes to even color of a text at all, especially when a text is capital letter intensive. But the caps do look a bit more “right” when they are a bit heavier. I fretted about this a bit while finishing up Morris Sans, but I have a feeling that it is the slightly different structure of the caps that makes them require a bitmore weight. Dunno… do they jump out at you that much?
20.Feb.2007 7.10am
Here are some comparisons of the new 2005 Carter Le Monde faces currently in use, and the Porchez face Le Monde Journal.
First, from Typofonderie.com, Le Monde Journal:
Second, from Newseum.org, a screen grab from today’s front page:
Unfortunately the image on the Newseum site is not clear for the text type, which is probably different from the display.
What is striking is that the ascenders and cap height of the Carter fonts are taller than in the Porchez fonts. Also the Carter font seems lighter than Le Monde Journal, whose color was designed to match the earlier Times New Roman that Le Monde used.
I don’t see the relative weight of the caps and lower case as being that different.
Is there a general trend for less extreme shortening of ascenders and caps in Newspapers?
20.Feb.2007 9.08am
> I don’t think that darker caps really contributes to even color of a text at all
Visibly darker caps, no, quite the opposite. But it shouldn’t be news to anybody that mathematically slightly heavier caps prevents them from looking too light next to the lc. My point was that visibly darker caps are generally intended to break even color, but this can be useful sometimes.
William, concerning the headline font what would be nice to add to that comparison is what came in between: De Groot’s superb Floris; serious but attractive, and very French in my eyes.
hhp
20.Feb.2007 9.10am
Is there a general trend for less extreme shortening of ascenders and caps in Newspapers?
I doubt it, given the pervasive down-sizing.
I’ve just finished a new text face for one such redesign; we went from 9 on 10 to 9 on 9.5, which preserved the word count despite the smaller page size.
Stems are 98 (caps) and 92 (lc).
By having the join with the main stem in h etc. cut down straightish, rather than spring out as a curve, this makes the ascender look tall, as, I think, does the difference in cap and ascender height, keeping air in the setting, despite tight leading. There are some quite light strokes in there, and the much improved (less gain) printing of newspapers today also allows for a compact setting, without an overly heavy overall effect.
20.Feb.2007 9.23am
Interesting, Nick. Your font seems toward the lighter side, like the Carter font. It looks to me without measuring that your ascenders are a bit shorter than Carter’s, but not much. Le Monde Journal’s are much shorter—it was a design solution in his eyes at the time.
Your font is a bit wider than either of theirs. Did you find that the width was a gain in readability, more so than shortening the extenders further?
[edit: this was posted before your additional info—thanks. The question still stands...]
20.Feb.2007 9.26am
I like that “y”.
Concerning news faces (noting that the distinction between headline and text is critical), the trend for the last number of years has actually been to go larger in point size. That’s one great reason to make the x-height smaller. Another reason is that the 70s have been over for a while now.
hhp
20.Feb.2007 11.51am
I’m not sure where the theory leads: from my perspective, I work against the copyfitting benchmark of other news faces, and really have to see a press proof on newsprint to decide. At the begining of this project, for research I set the same piece of text to the same column depth, with the same 10 pt leading, in a variety of text faces. The sizes worked out as follows:
9.0 Utopia
9.4 Mercury
8.4 Nimrod
8.9 Worldwide
9.3 Charter
9.0 Farnham
9.6 Freight
Really, I think all these faces are excellent for news text, and the differences in their x-heights don’t have much of a bearing. The key factor, IMO, is descender length. That’s why Freight is the least flexible for the genre, as with its generous descenders it may require more leading.
I don’t think cap height plays too much of role: Nimrod has ascender height caps, whereas Mercury’s are much shorter. But in absolute value, they come out much closer due to the 9.4 vs 8.4 difference, and if Mercury’s caps are still shorter, they have ample width.
**
Looking at the typical big-x-height ITC faces such as ITC Garamond and ITC Cheltenham, they appear stunted because (a) we are familiar with the originals, and (b) they have relatively long descenders, so the action in the x-height -to-cap region appears relatively crammed. In absolute terms, they are not much different in proportion from the above news faces, except for their “long” descenders. They are similar in proportion to Frutiger and Helvetica, too!
The really extreme “70s” faces are Usherwood, Eras and Antique Olive (’60s).
**
So to return to the original question, I think the comparison is really between three categories:
- Classic book faces with quite small x-heights and generous proportions all round
- Standard proportioned faces
- Extreme 60s/70s faces — noting that the “chopped” ITC versions of the classics may actually have standard proportions.
Wasn’t there an article in SOTA’s “Interrobang” about a system of nomenclature for this?
20.Feb.2007 12.04pm
> the differences in their x-heights don’t have much of
> a bearing. The key factor, IMO, is descender length.
This is focusing too much on avoiding collisions between lines, which, in a properly designed face, is taken care of via the talus (internal leading)... assuming no negative leading! In reality: x-height, ascenders and descenders are best seen as one thing; and the x-height in fact has the most bearing on readability, although ignoring the rest is exactly what makes the 70s ITC junk so unpalatable.
> They are similar in proportion to Frutiger and Helvetica, too!
Which is one reason those two are also useless for immersive reading, the other main reason being lack of serifs, plus in Helvetica’s case overly tight spacing.
hhp
20.Feb.2007 3.12pm
This is focusing too much on avoiding collisions between lines
That’s very important for news text.
I don’t think one can rely on internal leading — which was what I was trying to demonstrate by comparing the different faces, above.
Left to right: Nimrod, New Shinn face, Utopia, ITC Charter, ITC Garamond, Mercury G3.
Top row, all same point size.
Bottom row, adjusted to equalize x-height.
Once the x-heights are equalized, the biggest difference is between the “old school” news face, Nimrod, with its short descender, and the “new school” news face Mercury, with its tall ascender.
It’s interesting that Nimrod, widely regarded as one of the best faces for immersive reading in newspapers, has quite similar proportions to the much derided ITC Garamond, at least, above the baseline.
Perhaps for text use, ITC Garamond Next would be a good idea, with the missing weight between Light and Book, and with slightly more robust hairlines — but the same famous proportions.
20.Feb.2007 4.43pm
> That’s very important for news text.
I would say that the rough-and-tumble nature of newspaper reading
makes collisions more tolerable than in book typography for example.
> adjusted to equalize x-height.
That’s not a good way to do it, because:
> Nimrod, widely regarded as one of the best faces for immersive
> reading in newspapers, has quite similar proportions to the
> much derided ITC Garamond
Only if you ignore half the Cartesian space. In the horizontal dimension the two are different in two huge ways: width, and spacing. Nimrod is narrower, and looser. Taking into account both dimensions prevents the comparison of fonts by a simple equalization of the x-heights; the only real way to do it is to equalize apparent sizes. For better of worse this cannot be done numerically - it has to be eyeballed - but anyway that should appeal to you, no? :-)
In fact many of us have long said that ITC Garamond (preferably a demi weight) could be used for small sizes... if it were spaced much looser. In fact smaller sizes than Nimrod, considering its massive width. It’s a cornerstone of type design than all of a font’s attributes have to be balanced with each other to yield a serviceable whole: a huge x-height can only work for text (and only small text) if the color is darkish, and the spacing is loose. Mrs Eaves is arguably the most prominent case of that balance thrown off: the x-height is small, which makes it ideal for somewhat large text, but the color is ideal for typical text sizes, and most of all the spacing (beside being bad - different story) is way loose, which is ideal for small sizes! The Next that we really need is Mrs Eaves, since otherwise it’s such a beautiful design. Maybe call it Mr Richard. ;-)
It’s tempting to think that a simple tracking adjustment in the layout app can usually correct for such an imbalance (assuming an adequate gradation of weights) but spacing boundary conditions (such as the right side of the “r”) make that a half-baked solution.
hhp
20.Feb.2007 4.46pm
> one of the best faces for immersive reading in newspapers
BTW, according to you all reading is immersive anyway, right? Am I correct in assuming that you believe that the ideal vertical proportions for a news face for example are strictly a result of habit and culture?
hhp
20.Feb.2007 7.14pm
I love this. Somehow typography always comes down to two very precise and scientific measurements which are:
1) Somewhere in the middle
2) Eyeball it.
20.Feb.2007 8.42pm
It seems we’re veering in two different directions:
1) X-heights for display type and
2) X-heights for extended passages of text
Both I think are quite different. While I don’t have as much experience as Nick (or other Typophiles) would have in this, I do know that the context for reading a headline and reading copy are very different. The headline is “scanned” more than it is read. I’m of the opinion that a “lighter” face is more difficult to read (or should I say absorb) than a darker headline display face. The eye would tend to focus more on the white space the text creates than the actual words.
Carl pointed this out earlier as well...it is difficult to discuss this without discussing some of the other variables in the equation. Such as some necessities for newspaper design. For one, column widths are an important factor to consider. While this might not increase legibilty, a condensed face (at least slightly condensed with reasonably short descenders) might be ideal for narrow column widths.
If you look at Nick’s example, you can see that his face is certainly more condensed than that of ITC Garamond. Now for text faces...short descenders and condensed faces tend to be more difficult to read.
I love Fedra Serif and Lexicon for example, but I actually think the versions with shorter ascenders and descenders are more difficult to read. The larger x-height (at least to my eyes) actually looks and feels wrong. I’m not quite the scholar that many others on Typophile are, but I know Minion Pro is much easier on the eyes than Jenson Pro. Ripping off Nick :) here’s an example of Adobe Jenson Pro, Minion Pro, and Adobe Garamond Pro all Roman weights.
Holy crap! Look at that x-height on Jenson Pro! Minion has a significantly larger x-height, and Garamond’s width makes up for that x-height deficiency. Jenson doesn’t work for me when I read text. Howeva...I do know someone who has vision problems who loves Jenson Pro. My theory is that while Minion or Garamond might be sweet for people with normal vision (because we look for letter familiarity) Jenson might work better for my friend because the character (personality/quirkiness) of the individual letters might aid in her letter recognition.
I have no theories or research to back any of my opinions up— I just know what works for me when I read.
20.Feb.2007 10.17pm
Hrant, you’re right it’s not just the x-height.
Equalizing x-heights is just a convenient method I’ve often used for comparing different text typefaces.
Another way is modifying point size to get them close to fitting a similar amount of copy, which is the experiment I described further above — so what I could do for the comparative “I_thorn” diagram is to scale them according to the size ratios revealed in that test. Or maybe not—that’s a bit too much maths right now.
There is a similarity in both comparison techniques, as larger x-heights take up more space, but as you point out, they’re not the same.
So, there are three potential “controls” for comparing the differences in typographic quality between typefaces, in blocks of text:
1. Same point size
2. Same copy-fitting rate
3. Same x-height
Another way would be totally subjective — to just pick the best setting for each typeface with no measurable commonalities. Nothing wrong with that.
What “control” do you prefer for comparing typefaces in text settings, Hrant?
BTW, according to you all reading is immersive anyway, right?
Yes.
Am I correct in assuming that you believe that the ideal vertical proportions for a news face for example are strictly a result of habit and culture?
Speaking as a type designer, I’d say that the ideal proportions for a particular typeface emerge during its design, so yes, that is culturally specific.
As a typographer, I’d say that the design of the whole document informs the proportions of the typeface specified. The cultural circumstances surrounding the document, from the start, inform the design and typography. There’s some feedback from the face along the way.
20.Feb.2007 10.29pm
Biddy: You got the order wrong there. You have Jenson>Minion>Garamond.
Making a distinction between display and body copy is very important because the purposes of both are different, like sport fishing and fishing for food.
Display text is sport fishing. Catch and release. It’s designed to catch the eye first, then release to the content. Body copy on the other hand is like fishing for food. You want that fish to catch on, and hold on, until you’ve reeled it in. You want them to read the content until the message has been communicated.
So in that sense, is readability, as it concerns x-height, for display copy not as important as body copy? That’s why you could get away with using Olive Antique as a headline, but never for body copy.
20.Feb.2007 10.49pm
I don’t think a “design brief” can emerge from the inside.
If it does, I might call that an “art brief” instead.
> What “control” do you prefer for comparing typefaces in text settings, Hrant?
I think there are two dimensions at play: apparent-size vs. economy, and readability. The former can be controlled from one end or the other: you can equalize the apparent sizes (and apparent leadings) and see which uses up more space, or you can equalize the space used (while also minding the size/leading proportions) and see which one looks bigger. This dimension is basically about optimal legibility in the space. The latter dimension is more inexact and “unproven”, but with a mature grasp of the mechanics of reading (including distinctions between deliberation and immersion, as well as optimal letterspacing) it’s possible to do much better than just with the first dimension. For example a font with a very large x-height and very tight spacing will come out on top in the first dimension, but you can still say it’s not good because the point size, reading environment, etc. are such that the extenders can play a greater role facilitating immersion, or because the spacing is so tight that notan is ruined, etc.
Practically, I tend to do this when comparing two text faces: choose a target apparent size, often simply a sensical point size in one of the fonts; equalize the apparent sizes and minimum apparent leadings; observe the “mechanical” difference between economy; observe the “inexact” difference between vertical proportions, spacing, color, letterform divergence, etc. with the purpose of gauging “non-scalar” readability; and finally try to decide which face strikes a better balance between economy and readability.
Seperate and equally important to this is the evaluation of which face has an atmosphere/mood more suitable to the subject, noting that often a face can sacrifice (sometimes, in fact preferably, quite consciously) apparent size, economy and/or readability for the sake of atmosphere (like how some glyphs in Patria are intentionally “too bulky”).
hhp
21.Feb.2007 6.36am
There are some basic things that come into play for the person designing the document and choosing the face. The text is of a finite length and pages need be added in multiples of 4. With that as a background, I can’t imagine making a decision without the copyfitting component considered. You can call this some degree of efficiency and this may be of greater or lesser importance depending on the job. Newspapers pack it in much more than fine books. Fore me, it is about finding the best range of “sweet-spot” combinations in a given type and applying those to the copyfitting needs. If a given font you may choose first does not copyfit well within the respectable sweetspot range for that job, you need look mfor another typeface. For me sweetspot takes in all the variables including the character of the writing to be typeset along with the typical parameters of xheight,leading, line width, etc..
The job does not end at the microcosmos of the typeface, it takes water to float a boat, wind to move the sails, and navigation to get you to your destination.
ChrisL
21.Feb.2007 2.25pm
Biddy: You got the order wrong there. You have Jenson>Minion>Garamond.
Good catch, its been corrected. Even when I proofed it I still “read it in the order my mind saw it”. Why don’t we make a typeface that reads your mind? :)
3.Mar.2007 11.35am
Here’s another one from Juan Pablo De Gregorio’s blog: (Great blog by the way...)
5. x height
The area between baseline and x height contains most of the readable information (75% of the lower case letters). It is a very important area at the moment of reading text. Long ascenders and descenders require a small x hight. If we compare two types of designs, one with long ascenders and the other with short ascenders, we can see that the x height of the second one will be larger, so it will obviously be more legible. Look up for the difference between Times New Roman and Mrs. Eaves.
3.Mar.2007 2.51pm
> 75% of the lower case letters
This is not a useful statistic.
> Long ascenders and descenders require a small x hight.
This is not a good way to express it.
> it will obviously be more legible.
1) No, it depends (mostly on size).
2) Legibility vs readability makes all (or at least 50%) of the difference.
hhp
3.Mar.2007 3.49pm
You said the 75% stat wasn’t very useful, but does the idea itself make sense? We’ve all seen the tests where they chop off either the bottom half or top half of a sentence, and we can all agree that we can read the top half better.
We do scan the top half of sentences, so does making the top half more level by increasing x–height play any part in increasing the readability?
3.Mar.2007 4.02pm
That 75% is not useful because it’s based on the “pure” alphabetic set, which is out of context of real text. For example if you look at just the alphabet you might be tempted to make the descenders longer than the ascenders; but when you factor in actual letter frequencies you end up with the exact opposite conclusion.
hhp
4.Mar.2007 9.05am
That graphic from deGregorio is probably the worst one in the series: to compare 2 designs with different x-heights, you don’t want to scale one of them up; the apparent stem weight and serif weight are changed in his sample. Just having 2 faces with different x-heights doesn’t compel you to set them the same size, with the same nominal leading. This simplistic conclusion ignores all the other factors we’ve been discussing. As Hrant points out, removing this from the context of a printed page voids the argument.
Dan, I would say that it is specifically NOT helpful to “level out” the top half of the line of type. Once again, the ascenders and descenders perform a function in reading, and it is not insignificant. Some have argued that this effect proves the opposite, that descenders are less important.
Why are people so eager to reduce this complex, interdependent process into some kind of flat, simplistic sound bite?
4.Mar.2007 10.25am
Control. Monotheism. The Enlightenment. Modernism. Fear.
hhp
4.Mar.2007 6.26pm
Just a note on “economy.” I don’t know web presses that well; I’ve always assumed the paper cost on them to be higher. Anyway, on a sheet-feed press, you buy a sheet. Depending on the size of the sheet & the book trim, you’ll get 16- or 32- or even 64-page signatures. Paper isn’t the only cost of course, so it may turn out that even with the charge for canceling 16 pages, printing, say, four 32s and a 16 is less than five 32s. But four 32, a 16, an 8 and a 4 is more expensive.
If a chapter begins a new page, the facing page (usually the last page of the previous chapter can run 5 lines long or full dept. If you are setting 38 lines per page and you want to know the “savings” for running 39 lines, you would need the chapter to be at least 38 pages long to be sure of saving a page. You might save a page with just a five-page chapter (or 4, if you’ll run pages long), but it would be rare. If you don’t save a page, you won’t certainly won’t save any money. And sometimes saving a page can cost you money (that extra 8- or 4-page signature).
Anyway, the point is that a lot of those people who feel type should be set smaller & leading tighter for economic reasons don’t know how printing is paid for.
As far a legibility goes, that too is problematical. When my mother was in her late 70s, large-print books began to come out. They were far easier for her to read. Does that make them more legible, or just more legible for a specific audience?
I’m afraid I have to agree with Nick: Given a certain typeface at a certain size, there will be a word-spacing, leading and margin parameters that will just “click.” Sometimes this is dependent on the text to boot (that influences how many word spaces occur in an average line).
5.Mar.2007 5.18am
“Given a certain typeface at a certain size, there will be a word-spacing, leading and margin parameters that will just “click.” “
This is also what I meant by the sweet spot for a type.
ChrisL