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  1. #1

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    Pentax sharpest lens?

    Hi all!
    I'm just interested in which Pentax lens is supposed to be the sharpest?
    I've heard that the SMC m 55/1,8 is a good bet.
    How is the pancake SMC m 40/2,8?

    Cheers,
    calle

  2. #2

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    The Ltd are supposed to be good. For the money they better be -)

  3. #3

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    The pancake isnt that sharp, but it's tiny.

    A 50/1.7 is probably the sharpest one in that range.
    You can find lots of information about pentax lenses here:
    http://stans-photography.info/

  4. #4
    Donald Qualls's Avatar
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    Well, and the marginal difference between the 50/1.4, 50/1.7, and 55/1.8 is so small as to make it hardly worth pursuing one or another. They're all among the few lenses capable of generating more resolution than most films can record.

    I've got a radioactive 50/1.4, recently cured of most of the yellowing by a prolonged sun bath -- and now the meter in my Spottie is acting up. Sigh...
    Photography has always fascinated me -- as a child, simply for the magic of capturing an image onto glossy paper with a little box, but as an adult because of the unique juxtaposition of science and art -- the physics of optics, the mechanics of the camera, the chemistry of film and developer, alongside the art in seeing, composing, exposing, processing and printing.

  5. #5

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    I have & love the 50/1.7 and it's a beauty

  6. #6

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    Opinion varies

    Of the normals, the 50mm 1.7 has the reputation of an all around sharpest lens. The 43mm at optimum apature is most likely unbeatable. The 50mm macros are the real sleepers. They aren't as popular due to their speed but are most likely the sharpest of all the 50s. As far as which lens is the "sharpest", it is probably one of the longer macros, but the 135mm f1.8 and the various 85mm f1.4 versions have the rep as being Pentax's sharpest lenses. Some members of the PUG did some tests at one time, maybe you can find them doing a google search.

    Isaac
    See my adventures in Yemen here:
    www.isaharr.com

  7. #7
    josephaustin's Avatar
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    I love the old spotties though, my meter works about half the time. I have the 50/2, 50/1.4, and the 55/1.8, and cant honestly tell the difference. I use the 1.4 the majority of the time. The 28/3.5 is very sharp, I use it more then any other K-mount lense. The old K-mount "k" series lenses are sharper then the "m", and "a" according to some. I can see no difference there either. The K lenses are alot rarer because the M series came out so soon afterwards andreplaced the K. The K lenses are built more soundly though have the old takumar feel to them. Pentax glass has always done me proud, I just wish people would stop buying the screwmount taks for there dslrs, they are making the prices skyrocket!! The 40 mm is probably one of the least sharp lenses, but as mentioned above it is TINY.

  8. #8
    David H. Bebbington's Avatar
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    My 2 cents worth - I think the 43 mm f1.9 is great, the 50 mm f2.8 macro is very good close up but less so at infinity, I do not regard this as a general purpose lens. I have also been impressed by late screw-mount lenses, I used to use 28 mm f3.5 and 35 mm f3.5 on a Bessa L via an adapter (couldn't find a Pentax screw body without vibration problems).

  9. #9

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    Thanks for all your replies!
    Is there a difference between the SMC A and SMC M lenses? Optical I mean.
    I have found both a SMC A 50/1,7 and a SMC M 40/2,8 at an online auction and placed a bid on them.

  10. #10
    David H. Bebbington's Avatar
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    For all intents and purposes the same glass. SMC-A lenses have more contacts and work with later bodies in program mode (although I have an MZ5n and this works well with old lenses in aperture priority mode).

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