View Poll Results: 138mm lens which is sharpest aperture

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Results 1 to 8 of 8

Thread: 138mm lens which is sharpest aperture

  1. #1

    Join Date
    Jul 2005
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    950

    138mm lens which is sharpest aperture

    if you have a 138mm lens, which aperture do you consider to be its absolute sharpest ignoring dof.

  2. #2

    Join Date
    Jan 2001
    Posts
    4,585

    Re: 138mm lens which is sharpest aperture

    Do you mean 135mm?
    Wilhelm (Sarasota)

  3. #3

    Join Date
    Jul 2005
    Posts
    950

    Re: 138mm lens which is sharpest aperture

    close enough, I cant put all focal lengths up.

  4. #4

    Join Date
    May 2006
    Location
    Westminster, MD
    Posts
    1,654

    Re: 138mm lens which is sharpest aperture

    What does it matter? Sharpness is only a tool for translating one's vision to paper.

    What if you have an f/4.5 lens?

  5. #5

    Join Date
    Jan 2001
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    4,585

    Re: 138mm lens which is sharpest aperture

    I asked because, frankly, I don't know of ANY 138mm LF lenses.
    Wilhelm (Sarasota)

  6. #6

    Join Date
    Dec 2000
    Location
    Tonopah, Nevada, USA
    Posts
    5,772

    Re: 138mm lens which is sharpest aperture

    Quote Originally Posted by Bill_1856 View Post
    I asked because, frankly, I don't know of ANY 138mm LF lenses.
    Bausch & Lomb made a 139mm Tessar in the '50's. It's sharpest aperture was f7.2 so I couldn't vote.

  7. #7

    Join Date
    Dec 2001
    Location
    NJ
    Posts
    6,426

    Re: 138mm lens which is sharpest aperture

    138/4.5 Graphic Raptar. But what its for is anyone's guess.

  8. #8

    Join Date
    May 2006
    Location
    Alexandria, VA
    Posts
    18

    Re: 138mm lens which is sharpest aperture

    I have a 135mm Schneider Xenotar which is pretty sharp edge to edge even wide open at f/3.5, it only gets better stopped down. The lens seems to excell at around
    f/11 or f/16. This has long been my favorite all around lens for 4x5.

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