Thread: iPad Bookmaster - ePub and PDF reader for iOS
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Old 05-01-2016, 01:00 AM   #145
slantybard
my parent's oops...
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Quote:
Originally Posted by sbaylor View Post
When I create a new scene with the "original" image (img1), the resulting background image (img2) indeed does not look as sharp as the original one, but is still much sharper than the one as posted (img3).

Upon further analysis of the jpeg files, I've found that
img1 is 1536x2048 (iPad retina display resolution) jpeg at 93% compression.
img2 is 1536x2048 png
img3 is 1535x2047 jpeg at 75% compression.

The reason why img3 is not as sharp as img2 is likely due to the 75% (over)compression somehow applied before you uploaded img3.

The reason why img2 is not as sharp as img1 is that img2 is a non-retina down-sampling (768x1024) of img1.
Interesting analysis. When I posted the images, both were screen shots taken on the iPad and uploaded without any 3rd party modification as far as I know. When I use any image from the camera roll to develop a background scene, it always turns out quite fuzzy. Thanks for taking the time to reply to my posts.
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