Showcase Pentax 50mm f/1.2 K

Discussion in 'Adapted Lens Sample Image Showcase' started by Amin Sabet, May 17, 2014.

  1. Amin Sabet

    Amin Sabet Administrator

    Aug 6, 2011
    I think this is one of the least expensive f/1.2 lenses out there. Not sure why that is, but I'm glad it's the case. Very good performer on my A7.

    Both of these were at f/1.2:

    DSC01139 by Amin Sabet, on Flickr

    DSC01126 by Amin Sabet, on Flickr
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  2. davect01

    davect01 Super Moderator Subscribing Member

    Aug 20, 2011
    Fountain Hills, AZ
    Looks like a solid lens
    • Like Like x 1
  3. SpaceManSpiff

    SpaceManSpiff TalkEmount Top Veteran

    Dec 13, 2013
    Tucson, AZ
    Looks like you can get great subject isolation with that aperture on FF. The DOF must be wafer-thin though! Interesting PP effects on the first pic.
  4. Amin Sabet

    Amin Sabet Administrator

    Aug 6, 2011
    • Like Like x 7
  5. xXx1

    xXx1 TalkEmount All-Pro

    Jan 15, 2013
    It is quite difficult to get as very few were made and it isn't cheap. I hope to see comparison of these legacy lenses and Mitakon speedmaster at 1.2.
    • Like Like x 1
  6. Amin Sabet

    Amin Sabet Administrator

    Aug 6, 2011
    14289181508_c2557691ba_b. DSC01786 by Amin Sabet, on Flickr

    You wouldn't know it from the shot above, which is a bokeh challenge for any fast lens, but the Pentax 50/1.2 has the smoothest bokeh at f/1.2 of all the 50-58mm f/1.2-or-faster manual focus lenses I've owned (Zuiko OM 50/1.2, 55/1.2, Nikon 50/1.2 AIS, Canon 50/0.95, 50/1.2 LTM, Minolta Rokkor 58/1.2). It's really an underappreciated lens IMO.
    • Like Like x 5
  7. tjdean01

    tjdean01 TalkEmount Regular

    Jan 14, 2015
    Shots looking good! I don't think I would have shot them wide open, but then again it is nice to see that it performs well at that aperture. I have the 50mm M f1.7 version which on m4/3s shouldn't be used wide open. With a focal reducer, it can be. Once I hook it up to the A7, however, I think wide open will be no issue at all.
    • Like Like x 1
  8. Zanner

    Zanner TalkEmount Veteran Subscribing Member

    Aug 19, 2013
    Wisconsin, USA
    Love the first shot!
    I have the Pentax 50mm 1.7 and 50mm 1.4. I love them. I found the 50mm 1.7 in my father in laws closet and it was my first lens after the kit lens. It's what got me started on my addiction to old lenses.
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  9. sven karma

    sven karma TalkEmount Top Veteran

    Oct 5, 2016
    mark evans

    • Like Like x 3
  10. sliver-surfer

    sliver-surfer TalkEmount Regular

    Nov 29, 2013
    I had the Pentax SMC K version but now I have the Pentax-A version..the K is almost as good as the PKA. This Lens is the reason why I switched to Sony. I have a Pentax K5 and a KX and I had to switch out both Focusing screens to a homemade Canon precision screens and a Minolta 9000 screen which took several tries to shim accurately for 1.2. Even then the focusing screens would view as about f2.8.
    Here is a pic I took on my old 5N oh how I miss this camera.
    Here it is on my A7
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  11. sven karma

    sven karma TalkEmount Top Veteran

    Oct 5, 2016
    mark evans
    Yeah, my only disappointment has been that although I could get an M42 adapter to put my Takumar 55/1.8 on a Canon AE-1 there doesn't seem to ever have been a K mount adapter. Still, at least I will be able to try it on the stepson's 5D.

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  12. christilou

    christilou TalkEmount Top Veteran

    Nov 26, 2012
    Surrey, UK
    This is the Pentax SMC 55 1.8 not overly sharp and quite dreamy wide open (A7RII)

    • Like Like x 6
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