Quote Originally Posted by Old-N-Feeble View Post
So... if I shoot 4x5in sheet film and crop to 6x12cm that's LF. But if I shoot 6x12cm roll film with a 4x5 camera that's not LF. Hmm... yeah, I guess that's technically correct.
Is the film you are exposing in the camera 20 square inches or larger? If yes, you are using LF. If no, you are using medium format. QED.