50mm takumar question

Discussion in 'Adapted Lenses' started by colbycheese, Jul 6, 2015.

  1. colbycheese

    colbycheese Mu-43 Veteran

    May 1, 2012
    Way up there.
    I was reasearching the 50mm takumar lens and alot of times read about that the lens is radioactive and causes yellowing to the glass, which i found out can be fixed by leaving the lens in sunlight. Anyways, i am wondering if these lenses are safe, becaue when i and probably most people hear the word radioactive, they automatically think it is unsafe. I really didn't find any specific info on the safety but i am just curious.
  2. dwig

    dwig Mu-43 Top Veteran

    Jun 26, 2010
    Key West FL
    They are quite safe unless you are stockpiling tens of thousands of them in your bedroom and even then any dosage would be minimal.
  3. TNcasual

    TNcasual Mu-43 Hall of Famer

    Dec 2, 2014
    Knoxville, TN
    It won't give you super powers, except super photo-taking powers!

    I like my Super-Tak 50.
  4. tkbslc

    tkbslc Mu-43 Hall of Famer


    ALthough I don't think it offers much over you existing 3 ~50mm lenses. It's pretty soft at f1.4.
  5. colbycheese

    colbycheese Mu-43 Veteran

    May 1, 2012
    Way up there.
    i have recently go into the dangerous state of mind where i endlessly search for more legacy glass:D
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  6. barry13

    barry13 Super Moderator; Photon Wrangler

    Mar 7, 2014
    Southern California
    The newer super takumar is not radioactive and does not yellow, but the aperture blades are different.

    I had both 50s and several other Taks... leaving the yellow ones by a window for a month did make a big difference, but most of those lenses are soft on mu43.

    The 50mm f3.5 macro was pretty sharp.

  7. Gary5

    Gary5 Mu-43 Veteran

    Jan 15, 2014
    I have a S-M-C Tak 1.4. It was dark yellow when I bought it. I set it on a mirror with a $15 gooseneck led lamp shining into it, and it was clear in three or four days.

    I don't think there's another lens that's as weird with adapters. The same model adapter works for some Super Tak 50/1.4's but not for others, or vice-versa - something like that. I've seen comments explaining how to adjust the adapters, but other people say that only works sometimes (I haven't tried it yet). Anyway, mine won't work on either M42 to M43 adapter I own, but it does work on an M42 to FD adapter, so for now I'm stacking adapters.
    • Informative Informative x 1
  8. barry13

    barry13 Super Moderator; Photon Wrangler

    Mar 7, 2014
    Southern California
    Auto takumar lenses work best with the adapter flange removed.

  9. WT21

    WT21 Mu-43 Hall of Famer

    Feb 19, 2010
    SuperTak 50 is one of my favs. It is soft at 1.4 on any system. That was "portrait" mode when soft was in

    It sharpens up VERY quickly, and is very useable at f/2.0. It only gets razor sharp from there.

    A lovely lens, and I've left mine a bit yellow for a warmer feel.

    A Tak also has one of the loveliest manual focus rings I've ever used. Long throw, very smooth, easy to grip.

    bonus! A tak looks gorgeous on any camera.

    Some samples
    9304577654_bb856e8091_c.jpg 20100116-20100116-EP162461 by W T, on Flickr

    9304578200_9864195888_c.jpg 20100116-20100116-E1162526 by W T, on Flickr
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  10. pellicle

    pellicle Mu-43 All-Pro

    Feb 10, 2010
    Southport, OzTrailEYa
    granite is radioactive too ... probably about the same order of magnitiude