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Old 08-02-2020, 08:18 AM   #80
mdp
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Quote:
Originally Posted by DuckieTigger View Post
Yes. Different sizes. Your b/w example has text much smaller than the kaleido example
The photos of Kaleido provided by Charlie had text with a height of around 20px from baseline to ascenders' line - one can count the filter dots.

This is a 300→100 DPI degradation on a similarly sized font:


This is what going from 300 to 100 means. (The other example used smaller fonts, to show the difference better, as I wanted to scale the pixels 2x in the better-looking string to show them pixels).
EDIT: and in fact, I think that a zoom-in comparison is more telling:



Now, in Kaleido there is even no need to downgrade to 100DPI, because really that should involve one direction only. And if it did, it would be disastrous, because - well, that example above is what is meant by it. But several commentators, and Kozlowski was the first one from whom I read it, said so. Kozlowski wrote «PDF rendering engines will display PDF files as an image [at 100 PPI], because that is basically what they are» (and I report this because it has the potential to be very misleading... Note that according to such statement, even black text on white would massively, 9x downgrade! Hence my post #21 at https://www.mobileread.com/forums/sh...5&postcount=21). To the best of current reconstructions, that is not happening. That should not happen, for many technical reasons, and that must not happen, because it would mean the devastation above. Your traditional display may use ~96DPI, but you are keeping it at arm length, not at book distance. This is why the matter is not secondary.
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Last edited by mdp; 08-02-2020 at 02:01 PM.
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