I'm interested in the effects of aspect ratio on perception in photography, looking for detailed research. Could anyone recommend books, courses, research papers on the subject?
I've looked on google scholar but aspect ratio is a broad subject that has different meanings in different fields, thus I couldn't find anything relevant.
Aspect ratio can be chosen at the time of shooting, but also in post processing (Here is a thread on when to make the choice).
Knowing the theory behind it would help when making the creative decision of choosing a specific aspect ratio.