Vaughn
Subscriber
Half of my 35mm shots end up being printed square. I let the subject dictate the ratio, not the camera.
I guess what I do is work with the proportions of the film/camera I have with me to find scenes to get onto film. When using the Rolleicord, I am looking for square images. If I am carrying the 8x10, I am looking for images that fill the 8x10 proportions of the film holder -- but also for images that fill a 4x10 proportions since I also carry a modified darkslide that gives me two 4x10s on an 8x10 sheet of film.
So if I am walking around with the Rolleicord and see a "4x10" image, I wave at it, say, "see ya next time!" and move on and continue looking for square images. There are more out there than I have time to photograph and print, anyway.