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

  1. #1

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    how to record a full image circle on 4x5

    hello,

    I hope this was not coverd by now, at least I did not find anything about it.
    I would like to record a full image circle on 4x5". the closest option I found by now is an Angulon 65/6,8 which has an image circle of 109mm according to the schneider website. that is unfortunatley still a bit too much for the 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?

  2. #2
    Light Guru's Avatar
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    Re: how to record a full image circle on 4x5

    You will need to use a lens designed for a camera smaller then 4x5.
    Zak Baker
    zakbaker.photo

    "Sometimes I do get to places just when God's ready to have somebody click the shutter."
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  3. #3
    David Lobato David Lobato's Avatar
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    Re: how to record a full image circle on 4x5

    You will need a lens with an image circle smaller than 4 inches. Look for 6x7 or 6x9 medium format camera lenses with leaf shutters.

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

    Don't forget that the image circle gets proportionately larger as you focus in from infinity.

  5. #5
    Bill Kostelec
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    Re: how to record a full image circle on 4x5

    Even the lenses from an old Kodak folder, like a 616 roll film camera would probably be too much. How about a lens and shutter from a 35mm Retina?

    Bill

  6. #6

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

    Quote Originally Posted by wthaler View Post
    hello,

    I hope this was not coverd by now, at least I did not find anything about it.
    I would like to record a full image circle on 4x5". the closest option I found by now is an Angulon 65/6,8 which has an image circle of 109mm according to the schneider website. that is unfortunatley still a bit too much for the 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?

    38mm Biogon f/4.5 makes a beautiful circle on 4X5" film.

    Sandy
    http://www.sandykingphotography.com/
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  7. #7
    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

    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.
    http://www.jeffbridges.com/perception.html "Whether you think you can, or think you can't, you are right."

  8. #8

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

    Probably the simplest&cheapest way on a 4x5" is to use an enlarging lens. Maybe you can attach a L39 medium format one (75-105mm) on a #1 lens board in any way.

  9. #9

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

    A 101mm Ektar will produce a full circle image which barely touches the 4" width of 4x5 at infinity. Something in the 75-80mm range off a roll film camera will enable focusing closer and stil have the full circle. You do not want a wide angle designed lens. Perhaps a 120-135 telephoto meant for 6x9cm would also work. Haunt the local thrift shops.

  10. #10
    Jac@stafford.net's Avatar
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    Re: how to record a full image circle on 4x5

    Quote Originally Posted by sanking View Post
    38mm Biogon f/4.5 makes a beautiful circle on 4X5" film.
    A virtue of the 38mm Biogon is that apparent coverage (or rather light distribution) does not change as it is stopped down.

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