Greg
25-Feb-2019, 17:33
I use a whole plate Chamonix view camera. My 105mm f/8 FUJINON SW and my 600mm f/12 Fujinon T both cover the format but just barely, and I mean just barely. I swear that if the lens is 2 degrees off center axis, one or two corners will not be covered by a sharp image. Lens has to be "perfectly" on center axis with the back. GG is full and does not have its corners cut off. Closing the lens down and looking through it to see if you can see the corners of the GG doesn't work. My thoughts are to mount a mirror onto the back of a blank lens board. Then get a very, very small LED flashlight that can be placed exactly over the center of the back of the GG aimed towards the front lens board. Its image will be reflected back onto the rear GG. The reflected beam of light should show itself onto the GG. Once I adjust the front standard to have the reflected beam of light fall exactly on the LED light, the lens should be perfectly on center to the back. Does this make sense? Having trouble finding a very small LED flashlight. Also have to figure out a way to temporally "attach" it to the center of the GG. Mounting a small thin mirror to the back of the lens board and being perfectly parallel to the lens board I have solved.
Or is there some other way that I have overlooked to get the lens to be perfectly OC relative to the back of the camera?
thanks in advance
Or is there some other way that I have overlooked to get the lens to be perfectly OC relative to the back of the camera?
thanks in advance