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Thread: Process lens for 11 x 14

  1. #1

    Process lens for 11 x 14

    Hi

    I'm looking for a wide angle (10-12 inches) for 11 x 14 format. I don't care if there is no shutter and I don't need a large IC. I want to use it for landscape. I'll use a cap to act like a shutter. I want a good performance at infinity.

    What are my options.

    All tips are welcomed.

    Norm

  2. #2

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    Re: Process lens for 11 x 14

    Norm, your post's title asks for a process lens. Your text asks for a 10-12" lens that will cover 11x14. You've defined the empty set. A 300 that covers 11x14 sees an angle of 74 degrees. A 250 would have to see 84 degrees. Process lenses all see narrower angles.

    And then you said that you don't need a large IC. 11x14's diagonal is 452 mm. That's large.

    Your best bet may be a 250/6.3 Wide Field Ektar, except that it isn't a process lens. EKCo says it will just cover 11x14 without movements.

    There are other w/a lenses in the focal length range you want. This link http://sdrv.ms/1i4czGa will take you to a set of links to lens makers' catalogs and other sources of information on, mainly, LF lenses. Follow it and do your own research.

  3. #3

    Re: Process lens for 11 x 14

    Hi,

    The Apo Gerogon S 11/270mm stopped down to 32 might just cover at infinity .. a real performer .. superb contrast/resolution ..and not expensive ..

    joerg

  4. #4

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    Re: Process lens for 11 x 14

    Good thought, Joerg, but per Rodenstock it will fall a little short of 11x14. Norm, if you click on the link I gave you the link to R'stock process lenses and more is the skydrive link in the R'stock section.

  5. #5

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    Re: Process lens for 11 x 14

    12" Goerz Dagor in barrel.

  6. #6
    ic-racer's Avatar
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    Re: Process lens for 11 x 14

    Quote Originally Posted by norm the storm View Post
    Hi

    I'm looking for a wide angle (10-12 inches) for 11 x 14 format. I don't care if there is no shutter and I don't need a large IC. I want to use it for landscape. I'll use a cap to act like a shutter. I want a good performance at infinity.

    What are my options.

    All tips are welcomed.

    Norm
    Check out the Wide Angle Claron lenses. Up to 80 degree angle of view.
    http://125px.com/docs/manuals/lenses..._claron_wa.pdf

  7. #7
    Vaughn's Avatar
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    Re: Process lens for 11 x 14

    I have used the 270mm on 11x14 -- seems to cover well at infinity. Also a 300mm I use covers 11x14 -- I'll have to check the type later.
    "Landscapes exist in the material world yet soar in the realms of the spirit..." Tsung Ping, 5th Century China

  8. #8

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    Re: Process lens for 11 x 14

    A Schneider G-Claron 270mm or 305mm will both cover 1114. The 270 just barely. But the real pinnacle lens is the Computar f9 270mm. It was 6 elements, 6 groups and is not only amazingly sharp, it covers 12X20. The 305 and 360 Computar / Kyvytar / Kowa group lenses are a different formula and don't cover near as much. In fact those 2 cover less than the G-Claron.

    The Computar Kyvytar Kowa 270mm f9 lens is extremely hard to find, and mostly the word is out and people are hanging on to them. So expect to pay accordingly.

    G-Claron's. Schneider's web pages have extremely conservative coverage numbers, like 68 degrees or some such. That was because their original intended use as graphic arts lenses would only work in that range. But in practice for general photography, they are very very sharp, and they will cover 82 degrees on ULF. Someone will come on here and correct me. They always do. Trust me. I know what I'm talking about. Steer clear of the giant G-Clarons that say wide field or wide angle. f11 They aren't.

    If you don't need a shutter, another fine lens but harder to find is one made by Konica. They had a 260mm that just covered 11X14.

    The old Kodak 250mm Wide Field Ektar will just cover. The Computar is the best of the best though.

  9. #9

    Re: Process lens for 11 x 14

    Quote Originally Posted by Vaughn View Post
    I have used the 270mm on 11x14 -- seems to cover well at infinity. Also a 300mm I use covers 11x14 -- I'll have to check the type later.
    What are your lens?

  10. #10

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    Re: Process lens for 11 x 14

    There's also the Computar/Kyvytar/Kowa 240mm--it covers 11x14 with movements. The 210mm also covers 11x14, but with no movements.

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