Well there we go then
To cover as much of the screen as you can with images ...
Cover image - as in "go to - cover" is 600x800 AR=0.75
I notice that the cover image has a 1px or so 'dead zone' on the LHS - like the screen should be covered by the case material just a tiny bit more ...
Maximum screen coverage (as a page in an epub, say) is actually 573x800 AR=0.67125 but that (and 580x800) causes a blank screen after the image, even if I use a mbppagebreak thingy.
The MOST fill you can get without the 'blank page' effect is 574x800 AR=0.7175 ... which leaves maybe 1px above the bottom most coverage point on the screen.
Click to zoom full page view, and cover all the screen? 600x800 again ...!!!
With regular "full size" on a page images, the Kindle seems to crop a tiny bit of the LHS of the image ... say 4px? Oddly enough, this shows up in KindlePreview as well.
PS. Maybe :lol: changed the order of the files in the epub and now 574x800 is giving a blank page after!