THERE HAS BEEN A BIT OF DISCUSSION ON T.O.P., RE: format-primarily pano and square-and print size-too big? too small? Just right?.
re: format: Quite obviously I am primarily, but not exclusively, a square format picture maker when making "personal" / "fine art" work. Not cuz I think square is the perfect / ideal format ratio, but cuz, for my eye and sensibilities, I find it to be visually pleasing. Or, in other words, I just like the way my pictures look when printed square.
It should be noted that I do not "see" square. I "see" relaltionships of line, shape, tonal values (light) and color, aka: visual elements which makeup a picture's form. When my eye and sensibilities are pricked by a striking or artistic grouping, aka: tableux, I organize it within the boundary of a square frame. Added by the fact that I have been making pictures with devices that allow for square masking on the viewing screen.
That written, I firmly believe that, no matter the format imposed by any picture making device, I can successfully organize visual elements to work together well within the constraints of that format. I also believe that to be true of any picture maker who is sensitive to "seeing" (and "feeling") interesting / visually appealing form. Consequently, I appreciate pictures, presented in any format, that exhibit interesting form.
All of that written, re: print size: since my eye and sensibilities are attuned to form, the perfect print size for me is one that, relative to the space in which it is exhibited, allows me to see the entire visual field of the print. That is to write, a space that "pushes" me neither too close to nor too far from a print so that I cannot see (and feel) its form. To wit, really big prints need realy big exhibition space. Small prints not so much.
That written, small prints (relative to exhibit space / viewing distance) do encourage a sense of intimacy and preciousness in the viewing thereof. Conversely, big prints better convey a sense of grandeur and visual impact. A skilled picture maker who knows what he is trying to say / convey with his/her pictures will choose his/her print size wisely.
FYI, my ideal image size for my pictures is in the 10x10 - 24x24 inch size printed on 12x12 - 34x34 inch paper or mounted on 12x12 - 34x34 inch matte board.