Close
Checkmate said:
I was thinking to require the a minimum resolution of 1.6 Megapixel
My only question, is why 1.6 megapixel in particular?

IMHO, if you make a decision like this, the lower limit should be based on 300dpi scan sizes rather than digital. For example, A6 @300dpi (Bunko-ban) is already 2.16 megapixels. You could easily go the other way as well, and base it off a 3.5x5 photo print which would leave you at 1.5 megapixel at 300dpi.

Alternatively, if you instead based it off something like B5 doujinshi fit to height on common display sizes, you'd end up with something like 0.8 megapixel, while if you fit to width you'd be at 5.2 megapixels. While a 1920x1080 display in portrait view would end up at 1.65 megapixel if viewing B5 (1080x1525).

It all depends on what exactly the goal of the limit is, but I do think it should be some kind of objective measurement based on either print or fullscreen viewing.