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Old Minolta lenses with QSI camera

astrophotography accessories ccd equipment imaging
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#1 Steve Solon

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Posted 30 October 2018 - 05:45 PM

Hello all,

I've recently come into possession of my dad's old film-camera equipment - two Minolta cameras (SRT 101 and 201), and a fine collection of lenses (28mm, 135mm, 80-200mm zoom, and 400mm.) I've also recently purchased a new QSI 683wsg CCD camera. I've been told that the Minolta lens mounting is a bayonet-style that is not used any more. Would anyone have any ideas as to where I might find an adapter for these lenses to use with the new camera? Everything I see seems to be for Nikon and Canon.


These lenses certainly would broaden my astroimaging portfolio. They are pristine, and I'd hate to see them unused. The equipment is on the order of 40+ years old, if that helps in the search.


Many thanks for any responses.


- -  Steve Solon

#2 photomagica


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Posted 30 October 2018 - 06:13 PM


These are excellent lenses. Look on E-bay for Minolta lens adapters. I'd be surprised if you don't find some that fit the lens. However, what kind of a mount does the QSI camera have?



#3 Richard O'Neill

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Posted 30 October 2018 - 06:27 PM

https://www.ebay.com...ta lens adapter

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#4 medderx


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Posted 30 November 2018 - 10:21 AM

I hate to inform you, but the WSG variant wont support those lenses.


Those Minolta SR-Mount lenses require a maximum backfocus of 43.5mm to reach infinity focus. The 683-WSG takes up 44.5mm itself, adding in filters though will get you to 43.5mm. But then you also need an adapter so its still a no go. 



However there is an option, not a great one but at least there is one.


Get the QSI WS-8 cover (shortens camera backfocus, but ditches guiding)                                  https://telescopes.n...nt-and-cap.html

Get the C-Mount adapter (sadly this is the only one it will work with)                                          https://telescopes.n...er-type-ii.html

And finally a Minolta MC/MD to QSI C-Mount with 13.5mm effective length                                  https://www.preciseparts.com/


However I do recommend calling precise parts to see if there is a possibility that one could be made with the t-mount (8.9mm effective length needed) or without adapter plate/bolted directly to the camera (13.5mm effective length needed), sometimes their website does not do a perfect job of calculating what combinations are possible. You may notice I said your lenses are SR-Mount and the mount on precise parts is MC/MD, they are backwards compatible with SR. 

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Edited by medderx, 30 November 2018 - 10:23 AM.

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