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Optical Vs. Metric Kerning

Community Beginner ,
Sep 22, 2008 Sep 22, 2008

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What are the differences are between "Optical" and "Metric" kerning in InDesign? In what cases would you use one more than the other - is there a hard rule to when you would select either? Or is it just personal preference? Any help is appreciated.

Thanks,

D

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Enthusiast ,
Dec 24, 2008 Dec 24, 2008

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I really think this is a moot argument. Just as position of text frames,
columns, etc. belong to the designer, so too the way he decides to kern
the type. What's the difference if the type designer wanted it to look
differently? And if I scale type by 1-2% because I think it looks better
am I doing something illegal?

The main thing is that it "looks good" and looking good, as always, has
different definitions depending on the designer.

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Explorer ,
Dec 26, 2008 Dec 26, 2008

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Good, the discussion has finally made it to the slippery slope of personal aesthetics, where it belongs. Now we are all on equally unstable footing.

Though I might point out that if, in fact, "looking good" is a personal choice alone then there isn't much point in art or design schools. Just roll your own and be done with it!

Yours
Vern

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Community Beginner ,
Dec 26, 2008 Dec 26, 2008

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>has finally made it to the slippery slope of personal aesthetics,

I like $s as guide. If Ive spent $500-$1000 on a text family metrics start to look really good.

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Community Expert ,
Dec 26, 2008 Dec 26, 2008

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>I like $s as guide. If Ive spent $500-$1000 on a text family metrics start to look really good.

There is the solution for font developers: just price more, and the client will assume it's
i supposed
to look that way :-D

(It explains why Minion Pro has such bad kerning in, for example, French contractions: "L'Ascencion" kerns the 'L' and 'A' all the way up to eachother. It's a possible explanation because I got Minion for free.)

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Enthusiast ,
Jan 01, 2009 Jan 01, 2009

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Messing with fonts to achieve an aesthetic end is fine. The overall feel I'm getting is that all professionally designed and tested fonts are all wrong which is ludicrous. I kern and scale type too but rarely on long body text runs. Headlines, pull quotes, captions, footers and headers and similar short text blocks that I want to punch up are where I do most of my manipulation. I doubt I would ever scale a body font to 99% for an entire book.

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Community Beginner ,
Mar 25, 2020 Mar 25, 2020

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Optical for most but not for script fonts

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Community Expert ,
Mar 25, 2020 Mar 25, 2020

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Big problem with Optical if you use Tabular number figures, those should be mono-spaced of course, optical destroys that.

I use metric, as the font was designed. Optical once in a while for big headlines on big posters, maybe...

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Community Beginner ,
Mar 25, 2020 Mar 25, 2020

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Good point.

Particularly with fonts like Gotham where the figures are already kerned in the metrics. A report & Account doc becomes useless.

But some fonts eg. Bembo type RAILWAY in caps and the metrics are awful. Optical is still bad, but less so.

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Adobe Employee ,
Jan 19, 2022 Jan 19, 2022

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LATEST

I realize this is a 14-year old thread, my response is for anyone having the same question in the future:

 

Optical vs Metric is not a choice between two equals. In short:

- Metric kerning refers to the kerning built into the font, i.e. as intended by the font developer.

- Optical kerning ignores all kerning in the font and hands over all control of spacing/kerning to InDesign.

 

When working with professionally-produced fonts, Optical kerning should never be necessary. As mentioned earlier in this thread, Optical will do harm when it comes to connected script fonts, tabular figures, monospaced fonts, etc.
Optical should really only be a last resort – for example in case you have an unkerned font to work with.

 

In most cases, Metric kerning is preferable.

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