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Thread: Exposure duration control in the field when using an 8x10 camera with a barrel lens?

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    Meat Robot Jay Decker's Avatar
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    Exposure duration control in the field when using an 8x10 camera with a barrel lens?

    Love with the aesthetic of photographs taken with old barrel lenses on 8x10 film and I would like to join the fun. However, there is one fundamental question hanging me up, so I thought that I would ask the experts. How do you control exposure duration in the field when using an 8x10 camera with a barrel lens?

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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    A hat, a piece of black mat board, two pieces of black mat board held in a v-split for fsater shutter speeds and of course, slow film.

    Do a search on the "Galli Shutter" or "Galli Method" and you'll get some ideas.

    Have fun!
    Jim Cole
    Flagstaff, AZ

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    Meat Robot Jay Decker's Avatar
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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Quote Originally Posted by Jim Cole View Post
    A hat, a piece of black mat board, two pieces of black mat board held in a v-split for fsater shutter speeds and of course, slow film.

    Do a search on the "Galli Shutter" or "Galli Method" and you'll get some ideas.

    Have fun!

    Thank you very much for responding. Are you telling me that you think that is best to do what ever is necessary to keep the exposure duration long enough that you do not need mechanical shutter speed control? How long does the exposure duration need to be in order to rely upon manual exposure control, e.g., 1 second or longer? Do you just not shoot a lens wide open in bright light, e.g., a situation where you might need a 60th of a second exposure, or do you use ND filters to increase the exposure duration?

    Jim - great photographs on your web site!

    The Galli Shutter... hmm.


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    Lachlan 717
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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Try a Sinar Auto Aperture shutter and a lens diaphram combination. Much more latitude for both shutter speeds and lens options (8 seconds through to 1/60th and any barrel lens that will fit the diaphram).

    Of course, you will need a Sinar or a Horseman for this to be an easy option...

    Lachlan.

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    Meat Robot Jay Decker's Avatar
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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Quote Originally Posted by Lachlan 617 View Post
    Try a Sinar Auto Aperture shutter... Of course, you will need a Sinar or a Horseman for this to be an easy option...
    Have one these shutters that I use on my 4x5 Sinar P. However, I do not consider my Sinar P a camera that travels into the field well, and I think an 8x10 version would be even worse. There better 8x10 field cameras alternatives are there not?

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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Slow film or ND filters, and the lenscap.

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    Meat Robot Jay Decker's Avatar
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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Quote Originally Posted by Ron Marshall View Post
    Slow film or ND filters, and the lenscap.
    What exposure duration do need feel that you can achieve sufficiently accurate exposure control?

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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Quote Originally Posted by Jay Decker View Post
    Thank you very much for responding. Are you telling me that you think that is best to do what ever is necessary to keep the exposure duration long enough that you do not need mechanical shutter speed control? How long does the exposure duration need to be in order to rely upon manual exposure control, e.g., 1 second or longer? Do you just not shoot a lens wide open in bright light, e.g., a situation where you might need a 60th of a second exposure, or do you use ND filters to increase the exposure duration?

    I seem to be able to pull off speeds as fast as 1/8 to 1/16 sec with a single piece of mat board lifted up then down as fast as I can. With the Galli shutter that you showed in the photo with two boards in a split, I can pull of 1/30 or 1/60 second by varying the width of the split. Believe me this is pure guesswork, but I've gotten perfectly good negs everytime I've tried. I started experimenting in my studio when I got my first couple of barrel lenses and used a black wool cap with times of 1 second or longer.

    Give it a try...

    PS. Thanks for the complement on my work.
    Jim Cole
    Flagstaff, AZ

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    Meat Robot Jay Decker's Avatar
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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    Quote Originally Posted by Jim Cole View Post
    I seem to be able to pull off speeds as fast as 1/8 to 1/16 sec with a single piece of mat board lifted up then down as fast as I can. With the Galli shutter that you showed in the photo with two boards in a split, I can pull of 1/30 or 1/60 second by varying the width of the split. Believe me this is pure guesswork, but I've gotten perfectly good negs everytime I've tried. I started experimenting in my studio when I got my first couple of barrel lenses and used a black wool cap with times of 1 second or longer.

    Give it a try...

    PS. Thanks for the complement on my work.
    Excellent! That's what needed to know... thank you!

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    Andrew's Avatar
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    Re: Exposure duration control in the field when using an 8x10 camera with a barrel le

    they still make packard shutters
    http://www.packardshutter.com/

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