Hi Andreas,

The screen size for the Adagio Inventory item 'image' is for a picture about 250 pixels on a side. If the file size is larger, it will be shrunk so that it fits within the screen. If the file size is smaller, it will not be enlarged but instead show 100% size.

So the 'optimal' picture size for both disk space and viewing readability would be a square with 250 pixels per side. Larger pictures would simply mean more disk space used.