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  1. #1
    Join Date
    Jan 2009
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    Pinhole Photgraphy question

    I recently came across some pinhole pictures people took using a dslr. I see alot of people use lens caps with a hole drilled in the middle. Has anyone attempted this with their alpha? If so, I would like to cut through the process of "making" my own 'lens' by seeing how others have done it.

    Maybe sharing some pictures if you have them as well.

    Thanks
    Jeff
    My Flickr

    Sony Alpha a100
    Sony 18-200mm f/3.5-6.3
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  2. #2
    Join Date
    Dec 2007
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    2,562
    You can see some images on this flickr site.
    http://www.flickr.com/photos/normy/sets/1484713/
    Frank
    Sony A77
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    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  3. #3
    Join Date
    Oct 2008
    Location
    Raleigh, NC, USA
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    788
    I think you would want to do it the way that person did, with a hole in the body cap. Putting a hole in a lens cap would just result in black around all but the middle of your image.

    The pinhole kinda serves the same purpose as your aperture, so you need it closer in the focal plane to where the lens' aperture is.

    Unfortunately, I think the alphas won't fire the shutter without detecting the electronic contacts of a lens. I expect there would be a workaround though.

    You could probably get something like an A-mount to minolta manual focus adapter and then drill a hole in a manual focus body cap.
    Jason Hamilton
    Selective Frame

    EOS 5D - Canon EF 24-85mm f/3.5-4.5 USM, EF 35 f/2, EF 50mm f/1.8 Mk II, EF 70-210 f/3.5-4.5 USM, EF 85mm f/1.8 USM, EF 100mm f/2.8 Macro, Helios 44-2 58mm f/2 (with EOS adapter), 430EX, Canon S90
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  4. #4
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,560

    Cool Needling real glass options ...

    A "laser bore" is almost mandatory for a good pin-hole solution in a lens cap. There are a couple of people who do this and I considered it, a while back, until I realized it was a great way to suck dust into your camera, by operating the shutter with a wide open hole in the lens compartment. I decided on using real lenses, instead. The results seemed more consistent.

    With film, though ... while I was attending college, I was going to fashion one out of a brick! Using a Polaroid film back. How barbaric, eh? I figured the brick would be the perfect way to say ... "simplicity."

    Name:  the brick.JPG
Views: 95
Size:  11.6 KBName:  brick-cam.jpg
Views: 90
Size:  45.8 KB

    A pin-hole camera offers incredible DOF ... @ f/295 (<- click here)
    Last edited by DonSchap; 05-05-2009 at 12:30 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  5. #5
    Join Date
    Oct 2008
    Location
    Raleigh, NC, USA
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    788
    Yes, dust is certainly going to be an issue.
    Jason Hamilton
    Selective Frame

    EOS 5D - Canon EF 24-85mm f/3.5-4.5 USM, EF 35 f/2, EF 50mm f/1.8 Mk II, EF 70-210 f/3.5-4.5 USM, EF 85mm f/1.8 USM, EF 100mm f/2.8 Macro, Helios 44-2 58mm f/2 (with EOS adapter), 430EX, Canon S90
    Nikon FE - Nikkor 35mm f/2 AI'd, Nikkor 50mm f/1.8 AI, Nikkor 105mm f/2.5 AI, F to EF adapter, 2xVivitar 285, other lighting stuff
    Mamiya C220 - 80mm f/2.8

    Gear List flickr

  6. #6
    Join Date
    Dec 2006
    Location
    Guelph, Ontario
    Posts
    1,903
    you can fire the a700 and a900 without a lens mounted.
    Canon EOS 7D

    flickr
    FLUIDR

  7. #7
    Join Date
    Jun 2008
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    2,204
    And an A200/A300 and presumably an A350 and A100. Just set it to M mode.
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  8. #8
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
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    Smile No lens ... still an option

    Using any of the TAMRON Adaptall II lenses, you get a "no lens" reaction out of the camera, also, because of the lack of electrical contact connections between the lens and camera. Believe me, I still have pictures out of the α100.

    I have to admit, it takes a bit of thinking not having any aperture reading and the camera defaulting to f/1. You had better know you f/stops for your settings.
    Last edited by DonSchap; 05-05-2009 at 02:13 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  9. #9
    Join Date
    Dec 2006
    Location
    Guelph, Ontario
    Posts
    1,903
    Quote Originally Posted by dr4gon View Post
    And an A200/A300 and presumably an A350 and A100. Just set it to M mode.
    not sure. but with the a700, it is a menu option that has to be selected.
    Canon EOS 7D

    flickr
    FLUIDR

  10. #10
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
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    9,560
    On the A100 ... it is a menu item, also:

    Shutter Lock - Off: no lens

    On the A700 ... it is a menu item:

    Release w/oLens - Enable
    Last edited by DonSchap; 05-05-2009 at 03:16 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

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