Introducing... THE DENIZ SHUTTER

Discussion in 'Large Format Cameras and Accessories' started by Deniz, Aug 17, 2004.

  1. Deniz

    Deniz Member

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    I'll keep the story short.. I needed a shutter for my new 210mm lens and didnt have the $500 to spend for a SKgrimes mounting job so i made my own studio shutter. the accuracy depends on my reflexes.. but so far i am pleased with it ths is the first prototypelater versions maybe a little sleeker looking.

    it accepts upto 77mm filter on the front. It doesnt vignette with the 210mm lens, and acts as a lens shade in bright sun!!

    I may custom build one for anyone that needs one.
    Its made out of maple and basswood so its not heavy but plenty strong

    in the photos its mounted on a sinar/horseman board on my 8x10 tachihara
     
  2. juan

    juan Subscriber

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    That's very interesting. You're able to move the "slide" up and down without shaking the camera?
    juan
     
  3. Deniz

    Deniz Member

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    the darkslide is made of 1mm thick black anodized aluminum.. its it smooth and slides between 2 black dense foam pieces that act as the light trap. darkslide doesnt reall touch anything else..there is enough friction to take your hand off of it when its open but its smooth enough that you can puch it down with no camera shake..
     
  4. Tom Hoskinson

    Tom Hoskinson Member

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    Interesting Deniz, but I'll stick with my lens sock shutters.
     
  5. Robert Kennedy

    Robert Kennedy Member

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    Real photographers use bowler hats.... :smile:
     
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  6. Deniz

    Deniz Member

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    here is a little ipdate on the project..

    I did a slight modification to the shutter, removed one of the 2 foam pieces and glued it on the aluminum darkslide.. this way darkslide is not self supporting when open but closes down automatically when i let go of it(i can clip on a clothespin on it wen open for selfsupportiveness)
    .. so there is no camera shake whatsoever!!!

    I am going to Tofino,BC(look it up a must go place for every human being) in the next couple of days and aking my 8x10 along.. i sure will put this lens to a good test there...

    cheers
     
  7. John McCallum

    John McCallum Member

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    LOL :smile:

    Looks very effective Deniz.
    Pls pardon my ignorance but: why is it the ULFer's have this need for home-made shutters? Is it purely the cost aspect?
    And how do you get around exposure accuracy issues?

    Just curious because I'm planning on growing into a real grown up camera one day. :wink:
     
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  8. Tom Hoskinson

    Tom Hoskinson Member

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    John,
    We use dark slides, Bowler Hats, Caps, Lens Socks (my personal favorite), DENIZ Shutters and Packard shutters because we have barrel mounted lenses which have no built-in shutter - just an iris. Sometimes they don't even have an iris. Mounting such a lens in a shutter - especially if it is a large lens - becomes very expensive.

    At small apertures (f32 and smaller) the exposure times are long. Exposure timing errors (of a second or so) become insignificant with exposure times in the 10's of seconds.
     
  9. Tom Hoskinson

    Tom Hoskinson Member

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    455 mm f9 Apo-Nikkor Process Lens, Barrel Mount

    The lens diameter is about 5 inches. The Wehman lens board is 5.25 x 5.25 inches. The lens sock is double thick Polarfleece.
     

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  10. Tom Hoskinson

    Tom Hoskinson Member

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    Lens Sock/Shutter in place on 455mm Apo-Nikkor

    Pictures taken with this combination are very sharp - no camera movement.
     

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  11. Deniz

    Deniz Member

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    Tom, i really like that lens sock idea.. but i would think it would only work with big lenses since there isn't much surface on the small ones to put the sock onto.. hey with a lens that big, DENIZ shutter doesn't work..
    so there.. we should combine our ideas and make shutterland co.
     
  12. Robert Kennedy

    Robert Kennedy Member

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    Nice solutions to the problem all the way around.
     
  13. Tom Hoskinson

    Tom Hoskinson Member

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    Excellent point, Deniz. Works for me!
     
  14. bobfowler

    bobfowler Subscriber

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    I have a couple of articles on my website about mounting Packard shutters. This article shows how I made a box lensboard so I didn't have to cut a hole in my Eastman #2 to use a 14" R.D. Artar with a Packard.

    This article explains how I front-mount Packards. I use the front mount method for several different process lenses on my Toyo 4X5 monorail cameras.
     
  15. scootermm

    scootermm Subscriber

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    Tom
    I love those sock "inventions"
    I for one would be willing to pay a few well earned dollars for a couple of those.

    Very sharp idea and ingenius.
     
  16. Deckled Edge

    Deckled Edge Member

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    My personal favorite is shortened frozen orange juice can, painted flat black.

    Don't forget that you can use the "lens-cap-shutter" for in-camera dodging. If the sky is a little bright, remove the cap a little more slowly from the top and replace it from the top. Reflection off the water? Remove from the bottom and replace from the bottom. What SKGrimes shutter lets you do that?
     
  17. Deniz

    Deniz Member

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    Actually, you can do "in-camera dodging" a million times more accurate and better with the Deniz Shutter.. it basically acts as a neutral density filter.. i am going to the mountains in an hour i will test the shutter to its limits..
     
  18. Photographica

    Photographica Member

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    Here's a suggestion for an easy improvement on the "Deniz" shutter.
    Cut a slit in your slide that can basically scan across the face of your lens. Then trim the slide so that it will free fall. You will probably have to come up with a simple catch while it is in the up position.

    With the slide in the up position, the bottom part should cover the lens, drop the slide so it swipes across the lens exposing the film, and when it comes to rest the top part of the slide is covering your lens again.

    To further improve it, put a rubber band on the slide to pull it down. You'll get fast shutter speeds. Play around with various slit sizes too. I know for certain you could get speeds close to 1/1000 sec using this technique.

    There are a couple of examples of this type shutter here:
    http://www.cwriley.com/Photica/drop_shutters.htm

    Cheers,
    Bill
     
  19. Deckled Edge

    Deckled Edge Member

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    Any results yet? What mountains?
     
  20. Photographica

    Photographica Member

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    Thanks,
    I got side tracked from my camera collection when I became interested in "Alternative Shutter Styles." I'm intrigued by the ingenious ways designers came up with solving various functional problems. I like following the ingenuity of projects like the Deniz shutter. Perhaps, I'll add one to my collection some day.

    Can't wait to hear the reports of how it worked out.
     
  21. Deniz

    Deniz Member

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    Just to let everybody know, shutter worked great down to exposures of 2 seconds.(i didnt want to push it more)

    i did many polaroids and they all look great..there is always room for imprevement and i will be working on that very soon..
     
  22. Deniz

    Deniz Member

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    posted 2 photos in the technical gallery for everyone to see..