Is there a way to shoot square format on 35mm film?

There is a 35mm film back for a Bronica 6x6 camera; when I first found out about it, I envisioned a back that would let you shoot a whole roll of little square frames on 35mm film, and was sorely disappointed when I realized that it just shoots regular 35mm format. I like composing photos in a square frame. The suggestion to “just crop it” doesn’t cut any ice with me; I want the photo to be a square from the moment I frame it with my eye to the moment it’s developed on the film.

Are there cameras or camera backs that allow you to shoot a square frame, with a square viewfinder, on 35mm film?

How about a matte box with a square matte in it?

You might check out the Lomo/Holga/Diana class of plastic cameras. Here’s one that does what you want:

Diana

If you don’t mind having sprocket holes in your pictures, there’s always the Blackbird, Fly 35mm TLR camera.

Oh Jesus, is it back down the toy camera rabbit hole for me? :eek: