[jhowell]

Originally Posted by ilovejedd

Thank you very much! For OTA download, those are the same file sizes I get on my Paperwhite 3 so it doesn't seem as if the Oasis 2 is getting higher quality versions.

I agree. As another test I sent the same two books to my PaperWhite 2, which has an even lower resolution screen. The file sizes were identical to those on my Oasis 2.

Originally Posted by ilovejedd

Question, how did you check the resolution for the azw6 and kfx files?

I have some hacked together Python scripts that can extract the content from different Kindle file types.

Originally Posted by ilovejedd

For Naruto, is the resolution still 1250x1920? I wonder if the retina iPads get higher resolution versions.

For Naruto the images are 1280x1920 with a few pages in color in azw3, azw6, and kfx from Android. The same images are 965x1448 all in B/W in kfx from the kindles.

So the kindles are getting lower resolution images for that manga, but still high quality based on the file sizes.

Originally Posted by ilovejedd

I wonder if the retina iPads get higher resolution versions.

I doubt that different types of iOS and android devices get different resolution/quality files. As far as I can tell the apps all get the highest quality available, even if running on a phone.

Originally Posted by ilovejedd

Also, what version of K4PC are you running?

I have version 1.21 of Kindle for PC. The newer versions download azw6 files with higher quality images.

Originally Posted by j.p.s

Thanks! OK, so azw6 and kfx images from K4PC and android downloads are higher quality rather than higher resolution, at least for these examples of manga.

As I mentioned above, for the second one I tested the Oasis received lower resolution than the apps.

Originally Posted by j.p.s

So the amazon listed D/L size is for azw3 + kfx?

It appears to match the worst case size of azw3 + azw6.

Originally Posted by j.p.s

Does K4PC download both at once for K4PC versions that aren't restricted to azw3?

I don't understand the question. I am running version 1.21 of K4PC. It has support for KFX. However both of these comics were delivered to it in azw3+azw6 format.