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Thread: Your processes

  1. #21
    Newt_on_Swings's Avatar
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    Man, I want a F1.8 enlarging lens! lol

  2. #22

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    Quote Originally Posted by MattKing View Post
    Does it look like this, with a focusing helical?

    http://mars.bellstek.net/lens/090/00.htm
    Yep that's the one. It's a camera lens?

    ROL: thanks for the link, I'll have a look. I did have a look over the internet and didn't find it, so thanks again for linking me

  3. #23
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    Quote Originally Posted by nightbringer View Post
    Yep that's the one. It's a camera lens?
    Yes, it is a lens designed to be used on a camera.

    With a closest focussing distance of 0.45 meter.

    Definitely not optimized for use on an enlarger. With the exception of certain rare zooming enlarger lenses, no enlarger lens I am aware of have focus adjustments on the lens.

    If you are forced to use it until you can obtain an enlarger lens, make sure that the focusing helical on it is set to the closest available distance.

    Then adjust the enlarger height and focus using the enlarger's controls.

    Then make a final, slight adjustment to the focussing helical on the lens to maximise the limited sharpness that is available.

    Good luck, and have fun (much easier with a proper lens).
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  4. #24
    Rom
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    Quote Originally Posted by ROL View Post
    Well, I thought it was a "kind" act when I published this article over a year ago on my site, specifically for people who cannot avail themselves of printed material, academia, or workshops. It seems that a more than cursory search of the internet or these forums, would have surely brought it to your attention. Or perhaps the series of introductory technique articles I have written and illustrated simply aren't clear enough.
    Thanks a lot for sharing your knowledge.

    Very interesting articles indeed

    Peace

    Rom

  5. #25
    PDH
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    [QUOTE=MattKing;1225154]Yes, it is a lens designed to be used on a camera.

    With a closest focussing distance of 0.45 meter.

    Definitely not optimized for use on an enlarger. With the exception of certain rare zooming enlarger lenses, no enlarger lens I am aware of have focus adjustments on the lens.

    If you are forced to use it until you can obtain an enlarger lens, make sure that the focusing helical on it is set to the closest available distance.

    How did you fit a 35mm 55 mm lens to the enlarger? For enlarging see if you turn in it around, in the old days they sold reveral adaptor for copy and marco work, will work somewhat better until you can find an enlarger lens.

  6. #26
    MattKing's Avatar
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    Quote Originally Posted by PDH View Post

    How did you fit a 35mm 55 mm lens to the enlarger?
    I would guess that the lens is a 42mm screw thread mount, and that the enlarger has a lensboard with a 42mm thread installed on it.
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  7. #27
    PDH
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    Quote Originally Posted by MattKing View Post
    I would guess that the lens is a 42mm screw thread mount, and that the enlarger has a lensboard with a 42mm thread installed on it.
    If the lens is labled Pentex it is a K mount, not M42.

  8. #28

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    Quote Originally Posted by PDH View Post
    If the lens is labled Pentex it is a K mount, not M42.
    Well there you have it: "Pentex" for K mount, and "Pentax" for M42. Except there are Pentax K mounts as well.

    The Pentax brand is an old brand.

  9. #29
    MattKing's Avatar
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    Quote Originally Posted by Monito View Post
    Well there you have it: "Pentex" for K mount, and "Pentax" for M42. Except there are Pentax K mounts as well.

    The Pentax brand is an old brand.
    Actually it is neither - according to the OP it is labelled: "Asahi Opt. Co. - Super-Takumar 1:1.8/55"

    The OP understood that to mean a Pentax lens when he made his opening post.
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  10. #30

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    It came with a Pentax lens cap, I'll get some photos up once I get home and get an opportunity to photo my enlarger head.

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