Hi, Just wanted to make sure... I just got my hands on a 300/9 Rodenstock Apo-gerogon graphic arts lens, in barrel, and i heard somewhere that this lens can screw in directly in a copal 3 shutter... Am I right or just completely out of my mind ? Cheers
Probably best to check with SK Grimes (http://www.skgrimes.com). Their list has the 360mm f/11 APO Geragon being fitted into a Copal #1, so I'm guessing that the 300 wouldn't need or fit a Copal #3.
The Gerogon's are excellent but unfortunately they don't take to any shutter easily. Get youself some Efke 25 film and use the lens cap. Or investigate Packard shutters. I find them very easy to use for LF where "normal" exposure times hover in the 1/4 to 1/2 second range. That 300 should cover 11X14 with room to spare.
Second Brewster's motion, check with skgrimes. And I agree with Jim too. I once had a 210/9 ApoGerogon. One cell, the front if I recall correctly, was threaded 40x0.75, went right into a #1. The rear cell was too large to go into the rear of a #1. Or perhaps it was the other way 'round. Point is, one cell would go into the shutter, the other wouldn't. Not fun. If you need short timed exposures, front mounting on a big Ilex is an option. When in doubt, ISO 100 or slower film. Cheers, Dan
Hi, just in case you have the CL-version of the Apo-Gerogon 9/300, then front and rear cells may be screwed direct into a Copal 3 shutter. The rear cell has two threads, the smaller one will do. Overall length of the lens may be a tad longer than in repro application barrel , but with a symmetrical lens this need not be undesirable for infinity applications, at least it works more than reasonably. Best regards Joerg
thanks for the answers ! I mailed SKgrimes, and basically the answer was : we are not familiar with that particular lens... From your answers, i gather that the best way to go will be a packard shutter, and i'll first try the "drop shutter" option (basically a board with a hole that is dropped in front of the lens, not very precise, but moreso than lenscap shutter... I'll keep you posted on my solution... PJ