[carbon]

mhinagoya, the reasoning behind the second half of your post is what I was trying to adovocate for and to see if there are other factors beyond exit pupil that contribute to scopes with large eyebox.

Most of the time people pooh-pooh large objective scopes by using the first part of your post, i.e. old eyes “waste” extra light pencil diameter (exit pupil). I’m glad you didn’t go down that road.

Unfortunately, master optical engineers who post on forums are few and far between. I feel there has to be other factors beyond large exit pupils that makes some scopes (of the same magnification) easier to use. I know large eye relief and the ability to move one’s head around and still see through the scope are key to scope “friendliness”, at least to me.

I wonder what those additional factors are? Optical formula, scope length, scope tube diameter, etc?