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Thread: FS: Computar 25mm f/0.85 (YES .85!) C mount lens.. awesome for M 4/3s Nikon One ETC!

  1. #1
    sggelb
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    FS: Computar 25mm f/0.85 (YES .85!) C mount lens.. awesome for M 4/3s Nikon One ETC!

    Computar High Speed Lens

    25mm f/0.85

    very clean condition hardly any signs of use

    $750 plus shipping costs


    symmetrical plasmat design ala planar/xenon/G claron etc

    nice bokeh wide open, yet retains excellent sharpness

    sharp stopped down

    1 shot done at f/0,85 one at prob 2.8-4 both from the Nikon V1 (which is a SICK little camera btw)

  2. #2
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    Re: FS: Computar 25mm f/0.85 (YES .85!) C mount lens.. awesome for M 4/3s Nikon One E

    Interesting! How is actual exposure at the open apertures? (wondering how many stops you are actually getting at f/.85 vs. say a regular f/1.4 lens). I think f/.85 is probably half a stop faster than f/1.

  3. #3
    Super Duper
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    Vivek's Avatar
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    Re: FS: Computar 25mm f/0.85 (YES .85!) C mount lens.. awesome for M 4/3s Nikon One E

    A few comments if I may..(i have a sample of this lens)

    symmetrical plasmat design ala planar/xenon/G claron etc
    It is not a symmetrical design. Yes, it isn't unlike a Planar.

    I do not think it is made by Computar. My sample has no name.

    I believe the lens maker was a bit drunk or over enthusiastic when they put the numbers. It is not a f/0.85 lens. More like an f/1.1 (which is still very decent considering the tiny size).

    f/0.85 would make it 1 stop faster than an f/1 lens which this lens can not offer.

    This lens also does not cover the m4/3rds sensor fully.

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