hello i was wondering to remove a lens from a board do you have to have special tools? thanks
hello i was wondering to remove a lens from a board do you have to have special tools? thanks
Depends on the lens and the board I think.
I'm sure some just unscrew with a little persuasion, and others need a special tool. Correct me if I'm wrong.
the lens is a ektar lens 127mm with supermatic shutter, the board is just some kind of foam board it was mounted on for display i think, thanks
Yous should be able to remove the retaining ring, then remove the lens from the board, if is a foam core board, should not be difficult to remove as there is plenty of give in the board, the best way to mount and dis mount lenses is using a spanner wrench, I picked my set up on ebay.
Dave
There are two usual ways of mounting a lens in shutter. There may be a flange on the front of the board into which the assembly screws. You can just screw it out.
More likely in your case, the shutter will be held by a retaining ring at the back of the lensboard. Look at the back for a ring with two or more slots at the ouside, This unscrews and when it is removed the assembly just pulls straight out. The tool made for this pupose is usually called an adjustable spanner. If the ring is really tight, you will need one. They show up on eBay fairly often or can be purchased from www.skgrimes.com. Often, however, the ring is not all that tight and can be removed with an improvised tool.
This site has photos of a lens being mounted. Some extra steps are pictured, because the lens is being mounted on a recessed board. But with a flat board the main proceedure is the same:
http://www.fourmilab.ch/documents/recessed_lensboard/
Get one of these. Each side fits into the retaining ring of the shutter shown on the label. They are available from Rodenstock, MPEX, and Toyo.
Unscrew the rear element from the shutter, remove the retaining ring, separate the lens from the board (one or the other will fall off if you are not holding both, so hold them both), then screw the rear element back into the shutter.
David, I don't think the spanner you show will fit a Supermatic.
The 3 piece spanner kit I bought off of ebay for about $20 bucks, will cover virtually any size shutter that has been made in the last 125 years, I have used it on the 127mm as well as up to #5 shutters.
Dave
Ernest,Originally Posted by Ernest Purdum
Good point. If you use older shutters, or any not listed on one of the four sides of that flat wrench, a spanner wrench like this will work. Thanks for pointing that out.
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