First, let me try to address this issue from different points of view.
First, this, in theory, is in the scope of museography as a discipline. This would take into account the flow of people, the type of pieces the gallery is showing, the space available. But it is pretty hard to find information about this. So let me go to the next best thing I have: ...
This is a messy question.
How is the gallery laid out?
An 8x10" print is typically viewed at arms length or a bit closer. Think, cover of time Magazine.
A 16x20 works well at 5 feet.
a 32 x 40 works well at 10 feet, but you now are getting to have an interesting time with mounting and framing.
13 and 19 inch are magic numbers in printing as the ...