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Re: pixel densities, text sizing

From: Felix Miata <mrmazda@earthlink.net>
Date: Thu, 08 May 2014 01:11:15 -0400
Message-ID: <536B11F3.8020804@earthlink.net>
To: w3c-wai-ig@w3.org
On 2014-05-08 02:45 (GMT+0100) Patrick H. Lauke composed:

> in trying to further understand the rationale of your
> alternative viewing option instructions, I see where the problem
> lies...the difference between the "new" CSS lengths definition (where a
> "CSS" inch, cm, pt etc  is anchored on the size of the reference pixel)
> and the old one (where an inch, cm, pt etc would map to a real-world,
> physical inch).

> http://lists.w3.org/Archives/Public/www-style/2014Jan/0213.html

> As the reality outside of KDE/KHTML seems to be that of the "new"
> definition, I'm not sure there will be a common ground here to argue one
> way or the other, as we'd be comparing apples (and windows) to oranges.

The "problem" is that without following my scaling instruction, no one seated in 
other than the seat in which I now sit can have any confidence in being able to 
observe the perspective that was presented to me by my display. The idea of the 
scaling is to limit comparisons to apples vs. apples or oranges vs. oranges, and not 
beef vs. chicken or avocado vs. broccoli; to avoid having secondary characteristics 
obfuscating the primary point of an unavoidably complex presentation.

Whether web browsers follow the specs or not, or whether the specs have some problem 
or not, has no bearing on the fact that one can't expect the images to be able to 
offer the perspective presented to me by the subject pages unless either the image 
size is adjusted as required to match physically, or viewing distance is adjusted to 
emulate that same perspective provided by the indicated original physical size at a 
normalized viewing distance.

Unlike the image in your preceding thread reply, mine provide a built in scale that 
offers an *opportunity* for accurate scaling, and thus matched perspective. One can 
only estimate WRT http://i.imgur.com/q76abmy.jpg based upon the keyboard keys in the 
foreground of that image. Based upon the ratio of text size on those screens to the 
size of those keys, it's clear the whole UI and (more so) page content would need to 
be scaled up considerably (to something approaching a doubling) for either of those 
laptops to be comfortably used here, even with a (desktop to laptop) viewing distance 
adjustment taken into account.
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/
Received on Thursday, 8 May 2014 05:11:39 UTC

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