What is the suggested aspect ratio for a person's primary photo?
I know in the software itself the image displayed for the selected person can be any reasonable aspect ratio: the display height is fixed, but the width will adjust as required.
I am asking more for output purposes: e.g. if generating a tree or report that will show a portrait for each person:
is there any standard for this?
It seems to me that 4x5 would be good for a reasonably tight head & shoulders shot.
I want to try to get a common aspect ratio for all my primary photos, and since I am working on these now I'd like to settle on a value. (There of course might have to be a few exceptions when you go back to older relatives with very few photo choices!)