I picked up a Nikon 150mm lens to replace my 135mm on my Omega D4 with a ProLab condenser on the D4 chassis. I just realized why the lens was such a good price. The flange that goes from 50mm to 39mm must have been left on the lens board that the lens came off of.
My question is: I can get a lens board with a 50mm hole and mount the lens that way or would it be wiser to get the adapter so I can use a 39mm lens board that I already have? Would the difference in height matter?