Many photographers who were making images with medium and large format cameras switched to the 35mm format when we switched to digital. This was both to adopt some of the best, fastest advancing technology and because affording a 30K medium format digital back is just not easy. Even though the cameras we adopted are amazing in their abilities and sophistication, there is a critical difference between them and their larger format sisters. A larger sensor (or piece of film) allows a longer lens while still maintaining that same 'normal' field of view. So a 35mm camera uses a 50 mm lens to accomplish what a 180mm lens does on a 4x5. The vital difference is that the longer lens has more compression and less depth. A quality I appreciate in portraiture.
I'm still hoping for a larger sensor (not in megapixles but in physical size) - right now almost 6 by almost 4.5 is the biggest thing going. I would like a 6x8 cm sensor so I can start shooting with my Fuji GX camera again. Meanwhile Polaroid 4x5s are good diversion from shooting dSLRs
-Michael Winokur Photography