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Thread: how to record a full image circle on 4x5

  1. #21

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    Re: how to record a full image circle on 4x5

    Quote Originally Posted by wthaler View Post
    hello,

    I would like to record a full image circle on 4x5".
    5x8 inch would be too complicated for me, I would like a way to make it work for 4x5.
    Has somebody any idea or experience with this type of experiment?
    [QUOTE=Emmanuel BIGLER;1133212
    Hello from France
    --

    And now regarding the project of recording a full image circle delivered by a LF lens, another approach with a lens designed for the 4x5" format is to use 5x7" film like in this DIY project by Gilles Barbier.
    [/QUOTE]

    It pays to read the OP, Emmanuel.

  2. #22

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    Re: how to record a full image circle on 4x5

    Quote Originally Posted by Carsten Wolff View Post
    You can also physically vignette any lens by either adding a snoot, or even a piece of cut out cardboard to the front of your lens
    Using a 5x7 camera adds loads of options of course.
    You can vignette whatever lens at its rear end too...

  3. #23

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    Re: how to record a full image circle on 4x5

    It pays to read the OP, Emmanuel.

    And since I had, of course, read what the OP said : Has somebody any idea or experience with this type of experiment? (now I'm definitely richer having being paid)

    ... simply have a look at Gilles Barbier's article and scale everything by a factor 0.7

  4. #24

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    Re: how to record a full image circle on 4x5

    Quote Originally Posted by Emmanuel BIGLER View Post
    It pays to read the OP, Emmanuel.

    And since I had, of course, read what the OP said : Has somebody any idea or experience with this type of experiment? (now I'm definitely richer having being paid)

    ... simply have a look at Gilles Barbier's article and scale everything by a factor 0.7
    "This type of experiment" in your understanding pertains to 5x7 format which the OP expressly didn't wish? Strange. So why don't you explain now how you scale a 5x7 format and its lens "by a factor 0.7"?
    Gilles' article I read - it didn't take long to see that he speaks about a format the OP didn't want to use. Étrange, n'est-ce pas?

  5. #25
    come to the dark s(l)ide..... Carsten Wolff's Avatar
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    Re: how to record a full image circle on 4x5

    Quote Originally Posted by Carsten Wolff View Post
    The 58mm Omegon may work (image circle about 100mm); You can also physically vignette any lens by either adding a snoot, or even a piece of cut out cardboard to the front of your lens
    Using a 5x7 camera adds loads of options of course.
    Update: I just tried a 75mm f2.9 Lens off an old Braun Paxina: Image circle 99mm wide open at infinity.
    http://www.jeffbridges.com/perception.html "Whether you think you can, or think you can't, you are right."

  6. #26
    Format Omnivore Brian C. Miller's Avatar
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    Re: how to record a full image circle on 4x5

    Spiratone fisheye attachment.

    Click image for larger version. 

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    I bought a Nikkor 150mm lens just for this lens attachment. The fisheye lens attachment comes with different adapters, but the only one that fit anything close to a common filter thread was the Nikkor.

    And as everybody else said, use a lens for a smaller format. Note, though, that the circle of illumination may be larger than the rated format, so your mileage will definitely vary.
    "It's the way to educate your eyes. Stare. Pry, listen, eavesdrop. Die knowing something. You are not here long." - Walker Evans

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