Old 18-01-2013, 12:53 PM
Star Hunter
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Canon EOS to M42 threaded camera bodies

Does anyone know of an adapter to take a Canon EOS AF and Nikon lenses to fit a screw mounted camera body? Its just that I have an SBIG 237A CCD camera that takes M42 threads. Would be nice to fit a new-beaut Canon lens to that camera.. sigh..
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Old 18-01-2013, 01:19 PM
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naskies (Dave)
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Geoptik makes them:



Here's another one for M48 (you could use a step down ring to M42):


Several CCD manufacturers make them tailored for their own cameras, e.g. SBIG for their ST-8300 (I have one of these):


Peter Tan in Hong Kong used to stock some very cheap adapters; not sure if he still does.

The main thing is to make sure that you can get the correct ~ 44 mm (EOS) spacing between the lens and the CCD chip. First step would be to find out what the minimum back focus requirements of your 237A is.

Hope this helps!
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Old 18-01-2013, 01:27 PM
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Merlin66 (Ken)
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Google brings up so interesting stuff:
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Old 18-01-2013, 01:57 PM
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technofetishism (Nick)
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Just be careful looking at some of those adaptors, as while T and Pentax are both M42, one is 1.0mm thread pitch, and the other is 0.75mm.
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Old 18-01-2013, 03:40 PM
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lacad01 (Adam)
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Not sure if this guy can help but I purchased a M42 to C-mount adaptor to take an old Hanimex telephoto lens onto a cctv camera for video astronomy. Looks like they have quite a few options available:
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