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Thread: 240mm Lens Coverage - 7x17

  1. #1

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    240mm Lens Coverage - 7x17

    I've been busy researching possible choices for this focal length in the 7x17 format, and have a short list below of what I've found. Please do not hesitate to correct or to add lenses to this.

    240mm f/9 Computer
    240mm f/9 Kyvytar
    240mm f/9 Graphic Kowa (Some will work, depending on lens grouping)
    9 1/2 in f/6.8 Dagor (Soft corners have been reported, althought another thread on 7x17 lenses provides a chart that show that it should work.)


    Thanks,

    Ed
    Last edited by EdC; 30-Jan-2017 at 14:20. Reason: Additional lens to add to list.

  2. #2
    Lachlan 717
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    Re: 240mm Lens Coverage - 7x17

    Here is the thread on my (current) GK's performance:

    http://www.largeformatphotography.in...-k-a-coverage)
    Lachlan.

    You miss 100% of the shots you never take. -- Wayne Gretzky

  3. #3
    Lachlan 717
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    Re: 240mm Lens Coverage - 7x17

    There's also the Kyvytar 230mm f9.
    Lachlan.

    You miss 100% of the shots you never take. -- Wayne Gretzky

  4. #4

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    Re: 240mm Lens Coverage - 7x17

    A 240 that covers 7x17 has to cover around 88 degrees.

    Good luck.

  5. #5
    Randy's Avatar
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    Re: 240mm Lens Coverage - 7x17

    The 260mm Konica Hexanon GRII should cover 7X17.
    https://dl.dropboxusercontent.com/u/52893762/bigger4b.jpg

  6. #6
    Lachlan 717
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    Re: 240mm Lens Coverage - 7x17

    Quote Originally Posted by Dan Fromm View Post
    A 240 that covers 7x17 has to cover around 88 degrees.

    Good luck.
    If you check the thread I linked, you'll see that it is possible.

    I really don't understand why you do not think it's possible; there is a heap of supporting documentation.

    And what about the 210mm SSXL/SA and 200mm Grandagon? They all smash 7x17".
    Lachlan.

    You miss 100% of the shots you never take. -- Wayne Gretzky

  7. #7
    Lachlan 717
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    Re: 240mm Lens Coverage - 7x17

    Quote Originally Posted by Randy View Post
    The 260mm Konica Hexanon GRII should cover 7X17.
    It should.

    The 213mm Repomaster just misses the corners.
    Lachlan.

    You miss 100% of the shots you never take. -- Wayne Gretzky

  8. #8

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    Re: 240mm Lens Coverage - 7x17

    Here is a shot with my 240/9 Graphic Kowa on 7x17. I think it covers quite nicely.

    https://www.flickr.com/photos/summic...in/dateposted/

  9. #9

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    Re: 240mm Lens Coverage - 7x17

    Karl, thanks for posting the shot.

    You cheated. There's little detail in the corners so its hard to tell whether the lens renders it sharply.

  10. #10

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    Re: 240mm Lens Coverage - 7x17

    :-)

    The foreground is probably in front of the plane of focus. I may or may not have used much front tilt in this shot. Looking at my notes I see that I shot this at f64. I'm not going to say it's super sharp all the way to the corners, but that doesn't really matter to me. The main part of the image is very sharp.

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