Mamiya RB or RZ-camera to 4x5-back adapter?

**europanorama** · 1-Nov-2016, 00:27

Have seen Mamiya RB to 4x5-adapter but i am more interested in a camera-adapter for RB or RZ.
Background is using the RB67/70mm vaccum-back on 4x5 and easy focussing. Yes i have RZ-G-adapter already and heavy/limited Polaroid MP3 but not the mamyias yet.

**williaty** · 1-Nov-2016, 21:51

Are you trying to put the RZ lenses on a view camera or 4x5 sheet film behind the RZ? The body vignetting will be a limitation if you're trying the latter. Do the RZ lenses even project an image circle near big enough to fill 4x5?

**neil poulsen** · 2-Nov-2016, 09:23

Can you elaborate? Do you want to attach an RB back to a 4x5? It sounds like it. Or, are you adapting an RB camera body to the back? What lenses do you want to use with this project?

I would also help to know the intended purpose of this system.

**Alan Gales** · 2-Nov-2016, 09:38

I believe I have seen an adapter that adapts RB backs to a 4x5. An RZ back won't work because the film advance is on the camera and not on the film back.

As far as adapting an RB or RZ camera to the back of a 4x5 I really doubt an adapter would be made. The cameras weigh a ton and it would put a lot of stress on the 4x5 back and any adapter.

**photonsoup** · 2-Nov-2016, 15:03

You can make your own. How diffficult depends on the LF camera. I tore apart an old Nikon lense and epoxied the mount to a metal Cambo lens board (which fits on the rear standard instead of the 4x5 back). It's very sturdy and solid, I'm sure that it would easily support a MF camera. It does limit the size of lens you can use because film plane/sensor sits further away from the lens than the original film plane. With my setup I can use a 90mm lens with no movements or a resssesed lens board with movements.