Regarding post #3:
See “Using RB67 Lenses on RZ PRO II Body” page 21 here:
The information is correct for using the RB67 lenses on all versions of RZ67 bodies.
The FFD (flange focal distance of the RB67 body is 111mm, while the RZ67 body has FFD of 104mm. Thus an RB67 lens sits 7mm too close to the film plane to focus at infinity (or any other distance).
Like all through-the-lens focusing systems, the SLR viewfinder image matches what you record on film. For close-up work the true bellows extension needed to determine the required exposure compensation is the reading on the bellows scale - 7mm.
For example, at infinity focus the bellows scale reads 7mm, so the true extension is 7mm - 7mm = 0, i.e. no extension and no exposure compensation needed.
If you close focus and the bellows scale reads, say, 32mm, then the true extension is 32mm - 7mm = 25mm and you determine exposure compensation based on 25mm of extension.
You could still use the DOF scale with an RB lens on the RZ camera by moving the lens back 7mm towards the body after initially focusing and reading the DOF scale for that focal length. Then you’d have to refocus the lens before shooting. To do this you’d look at the bellows scale after focusing and retract the lens 7mm by the scale reading. It’s inconvenient, but can be done.
It’s usually more practical to simply set the aperture wanted on the preset ring and close the diaphragm with the DOF lever on the right side of the lens as you view the image on the focusing screen.
Last edited by Ian C; 04-28-2012 at 09:38 AM. Click to view previous post history.