Would 30mm shots look good with an A12v (vertical 4.5x6) or an A16 back (6x4.5)? Are the Hasselblad film notches present in A12V negatives, or is it exactly the same as cropping from 6x6? I like having the borders, seeing exactly what I'm going to get through the viewfinder, and not cropping negatives. Would the fisheye effect be present in all of the corners or just the two corners that aren't affected by the back's mask? Might be nice to switch up the format depending on the location, and not always have square skateboard shots and portraits from the Hasselblad. Thoughts?