Does anyone have any standards set up for photos? I'm using JPGs straight from the camera @72 pix/inch 8-bit RGB. Seems to work. Does anyone have a different standard? Is this adequate for Android and iOS?
Pics are usually described by their resolution versus pixels per inch. 320x480 would probably be a good minimum size for modern android phones. My phone's native resolution is much larger but it automatically adjusts as needed. I use several tools but for resizing, cropping etc., www.paint.net has a free program that can usually get the job done.
If you are talking about photo quality, I never thought it mattered too much unless you can see obvious visual artifacts. What you see is what you get. If it looks good to me, it meets my standards. The overall size of the app or .apk is the only other thing I would be concerned about. Too many high res photos make for an app that might get uninstalled just because it takes up too much space. I have a HD wallpapers app weighing in at 25mb, BUT that particular app is specifically for Samsung Galaxy Note 2 phones which have a ridiculous amount of on-board and external storage... which makes it a non-issue.
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If you are talking about photo quality, I never thought it mattered too much unless you can see obvious visual artifacts. What you see is what you get. If it looks good to me, it meets my standards.