Sunflower Pinhole


Posted by SantaFeJoe on Sun Jul 06, 2014 7:12 pm

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An image created with a pinhole on a Nikon D700 by shooting a screenshot of another image of sunflowers shot somewhere in NM. Unsharpness is characteristic of pinhole images due to lack of glass.
Nikon D700, pinhole, 1/2 sec.exposure, adjusted in LR and Windows.
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso

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by Gary Briney on Sun Jul 06, 2014 7:37 pm
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Cool experiment Joe --- a convincing vintage look. Care to share any details about the pinhole --- did you make yourself?
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by SantaFeJoe on Sun Jul 06, 2014 9:50 pm
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Hey, Gary! I took a body cap and drilled a tiny hole in the center of it. Most people drill a larger hole in a body cap and attach a pinhole that has been made in a piece of beverage can aluminum. The hole size makes a difference in the sharpness of the image and light transmission, so with the aluminum (some people prefer brass) version it's easy to experiment with what works best. There are commercially available body caps with pinholes pre drilled, or laser cut, online. Depth of field is almost from zero to infinity. Outdoors, the contrast is not harsh like in this image and sharpness is better. Exposure is a matter of experimenting and some people even use flash. Exposures are generally long (aperture is generally about f150-f200), so a tripod is advisable. For a telephoto effect, the cap can be mounted on an extension tube or tubes, but the optimum hole size will be different. If you Google "Digital Pinhole Photography", you can find a lot of information about techniques for pinhole photography. I'm planning on posting some outdoor images soon.

http://www.digitalcameraworld.com/2013/ ... le-camera/

http://photo.net/learn/pinhole/create-a ... le-camera/

http://www.lenoxlaser.com/index.php?dis ... uct_id=149

http://holgadget.com/products/pinhole-l ... camera-red

Here's a neat gallery of pinhole and slit photos (I especially like the image of Monument Valley):

http://www.lenoxlaser.com/index.php?dis ... ory_id=104

Joe
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso


Last edited by SantaFeJoe on Sun Jul 06, 2014 11:12 pm, edited 1 time in total.
 

by Gary Briney on Sun Jul 06, 2014 11:04 pm
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SantaFeJoe wrote:Hey, Gary! I took a body cap and drilled a tiny hole in the center of it. Most people drill a larger hole in a body cap and attach a pinhole that has been made in a piece of beverage can aluminum. The hole size makes a difference in the sharpness of the image and light transmission, so with the aluminum (some people prefer brass) version it's easy to experiment with what works best...
Joe,

Thanks very much for the thorough documentation! I've come close to buying a laser cut pinhole a couple of times, but the urge passes before I can decide on a focal length (diameter) and place an order. :wink:
G. Briney
 

by SantaFeJoe on Sun Jul 06, 2014 11:17 pm
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Another good thing to know is that every speck of dust, etc. on your sensor will show up in your image!

Joe
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso
 

by Cynthia Crawford on Mon Jul 07, 2014 12:24 pm
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Hey, Joe- that's kinda neat. The unfocussed look, to me , might be something that could translate into a fabric print, perhaps.
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by Carol Clarke on Tue Jul 08, 2014 4:27 pm
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This is just a tiny bit too hazy for my poor old eyes Joe, but I admire your experimenting!
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