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View Full Version : sironar-n 240mm vs 64mm lens board



o.gok
7-Dec-2010, 09:31
I'm looking for a lens board to mount a sironar-n 240mm with copal 3 shutter. As far as I know the copal 3 shutter is 65mm. I have found a wista lens board on keh.com, but it is 64 mm. Do you think that would work? I am using a linhof adapter for toyo 45 cf.
That's the board I am mentioning:
http://www.keh.com/camera/Large-Format-Lens-Boards/1/sku-LF509991073220?r=FE

Peter K
7-Dec-2010, 09:57
As far as I know the copal 3 shutter is 65mm. I have found a wista lens board on keh.com, but it is 64 mm.
The Copal #3 and also the Compur #3 needs a 65mm hole but the Copal #3s only 64.1mm.

For what lens do you need the lensboard? Because also the threads for the lens are different, M 58 x 0.75mm with the Copal/Compur #3 but 56 x 0.75mm with the Copal #3s.

Gem Singer
7-Dec-2010, 10:15
That 64mm Wista lens board listed on the KEH website is for a Copal 3 shutter.

KEH probably measures lens board openings with a ruler. Anything in the 64-66mm range will fit a Copal 3 shutter.

o.gok
8-Dec-2010, 03:09
That 64mm Wista lens board listed on the KEH website is for a Copal 3 shutter.

KEH probably measures lens board openings with a ruler. Anything in the 64-66mm range will fit a Copal 3 shutter.
thank you gem!