Rodenstock-Ysarex 127mm 4.5 lens from Polaroidgreenspun.com : LUSENET : Large format photography : One Thread
I have a Rodenstock-Ysarex 127mm 4.5 lens that I wripped out of an old wet process Polaroid Land Cammera. I think its original format was about 3-1/2 x 4-1/2. It was mounted on a lens board in the Polariod and appears to be mounted in about a #1 shutter. I'm new to veiw so I am nguessing about that size but it is bigger than my #0s in my Mamiya TLRs. It looks usable as a view camera lens to me as it is self contained and can be mounted in a board. I havn't messed with large format in 20 years so I need help.
Any guess if the immage circle will cover 3x6, 3x9 ... or (wild dream) 4x5. Also since it is older than I am, it needs to be cleaned.
I would appreciate any help.
-- Roger Madison (email@example.com), November 17, 1999
You can approximately measure the image circle yourself by projecting the light leaving the lense (preferably from a subject at infinity) onto either a piece of white paper or a large ground glass that is held at approximately the focal length of the lense. It'll help if the light source is bright, and the focussing surface is in low light. You'll also get rather more image circle at the smaller apertures.
-- fw (firstname.lastname@example.org), November 18, 1999.