M45 x 0.75 male thread industrial lens to Copal #3 lens board?

[jvanhuys]

Hi large-format pioneers!

Quick one when time permits your side: I want to mount my M45 x 0.75 male threaded lens to a Copal 3 lensboard. I'm sligthly confused, because I'm assuming the copal 3 lens board still needs the shutter to be screwed in!

Just for the sake of conversation, I had the idea of using the adapter linked below, with the lens board also listed below... but I fear the adapter probably needs a shutter between it and the lens board panel.

Would love to hear your thoughts or suggestions.


https://rafcamera.com/adapter-m45-75x0-75f-to-m58x0-75m-flat

https://www.ebay.com/itm/314167113512?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=G9-OID7mRiS&sssrc=2047675&ssuid=ad1lhgeitfi&widget_ver=artemis&media=COPY

[B.S.Kumar]

My suggestion assumes you don't want to use a shutter. Retaining rings are used at the rear of the lens board to hold the lens. You would need a 45.75 or 46mm hole in the lens board, not the larger 65mm hole for the Copal/Compur 3 shutter. Then you can use the RAF adapter like a retaining ring.

Kumar

[jvanhuys]

That's exactly right! Thanks for the info, I appreciate it:)