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  1. #1
    Senior Member LightBright's Avatar
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    Question Will screwmount lenses work with k20d or k7?

    I have a old pentax spotmatic lying around with a "Pentax Screw mount 50 F1.4 SUPER TAKUMAR (49) lens" Will it fit on the k20d or the new k7?

    Thanks
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  2. #2
    Captain of the Ship Photo-John's Avatar
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    Re: Will screwmount lenses work with k20d or k7?

    I don't believe so. K-mount lenses will fit. But I think you'll need an adapter for the screw mount lenses. If you can use them they won't have any auto focus or auto exposure. That might seem obvious but some people think that an auto focus camera means that the old lenses will magically be upgraded to all the new features
    Photo-John

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  3. #3
    Senior Member LightBright's Avatar
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    Re: Will screwmount lenses work with k20d or k7?

    http://www.rugift.com/photocameras/pentax-adapter.htm I found one, thanks photo john!

    I actully like the fact that i have to manually focus and have a aperture diaphragm. But am not found that it says I need to have it on stop down mode for metering Might be tough too shoot at a high f-stop
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  4. #4
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    Re: Will screwmount lenses work with k20d or k7?

    If the adapter dosen't look like this one don't buy it. I have a nice small set of M42 lenses and they are some of the best manual lenses out there. Pentax K mount cameras will work with any lens they ever built. Some need a inexpensive adapter but they are just fine. If you ever want to sell the lens let me know.
    http://cgi.ebay.com/M42-K-M-mount-ad...3A1%7C294%3A50
    CAMERA'S;
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    TAMRON SP 17-50/2.8 Di II & AF 1.4X MC4 TC
    SIGMA EX 100-300/4 APO DG
    SIGMA EX 105/2.8 DG Macro
    SIGMA EX 10-20/4_5.6 DG
    D-BG4 Battery Grip
    Metz 58 AF-1 Flash
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    Feisol CT-3441T CF Tripod & Photo Clam PC-33NS Head

  5. #5
    Senior Member LightBright's Avatar
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    Re: Will screwmount lenses work with k20d or k7?

    Im now debating if I should get a k20d as a back up body. The price is to low to pass up. Thanks again
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  6. #6
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    Re: Will screwmount lenses work with k20d or k7?

    Quote Originally Posted by Turkey_Lips
    If the adapter dosen't look like this one don't buy it. I have a nice small set of M42 lenses and they are some of the best manual lenses out there. Pentax K mount cameras will work with any lens they ever built. Some need a inexpensive adapter but they are just fine. If you ever want to sell the lens let me know.
    http://cgi.ebay.com/M42-K-M-mount-ad...3A1%7C294%3A50

    I have to STRONGLY disagree with this statement.

    Although the Pentax adaptor is very good, other brands of adaptors work just as well. I have been using M42 lenses on my Pentax cameras for years without any problems and I dont use a Pentax brand adaptor. My adaptor has an inner flange to keep the pin pressed in on all lenses without the auto switch. This allows me to use a wide variety of M42 lenses that otherwise would have caused me headaches.



    BRIGHTLIGHT,
    Your Tak will work fine on the K20D and K7. Just get an adaptor.

    Check out this site for all the info you will ever need about manual focus lenses and digital use.


    http://forum.mflenses.com/
    Last edited by spiralcity; 07-24-2009 at 11:47 AM.

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