Divide the picture pixels by 96, this will get the size the canvas best fits:
Example: File size 3840 x 5760, the best canvas size is 40 X 60,
If this Canvas size is larger than what you want, reduce both measurements by multiplying each size by 0.8; 0.6; 0.5 and so on. This will keep the proper aspect ratio.File size 1728 x 2304, the best canvas size is 18 X 24.
|Print Size||Minimum Pixel Size to Yield Good Prints||Minimum File Size to Yield Good Prints|