Touch Best image size in epub format for Kobo touch

Hi, Kobo touch has 600x800 pix. I have already made many cbz files. 600x600 pix is the best image size in cbz file for my use.

I just checked several image size for best view in epub file.
360x360
480x480
500x500
520x520
540x540
550x550
560x560
580x580
600x600
1200x1200

I think 550x550 is the best view for my kobo touch instead of 600x600 in epub format. Is that right and is there any reason for that?

I put the small epub file for this test. Thank you very much in Advance.

Attached Files

ImageTest.epub (93.1 KB)