Pinhole Camera and Photos
Pinhole cameras, despite their simplicity in equipment and capture can yield some of the most unique pictures unmatched with current state of the art cameras. It requires a little trial and error that requires a little more patience than a digital camera, but the results can be quite interesting. Looks like the name "Mr. Oats" is close enough: http://au.answers.yahoo.com/question/index?qid=20080116162601AA9mlwD
Instructions for Pinhole Camera Pictures:
If you do NOT cut your paper down, make sure your name goes along the edge of the short side.
This will RUIN your negative.
Place one or two books on top of the camera. Make sue the camera does not move during the exposure, so make sure it is place on sold ground. Never place it in the grass.
Tips and Suggestions:
*** Shoot what is lit by the sun. Shoot with the sun to the back of the camera. Subject should be facing the sun. Don't shoot toward the sun at all.
Assuming the sun is out, no clouds. 2nd Period - 1 minute, 3rd & 4th - 50 seconds, 5th - 40 seconds, 6th and 7th - 30 seconds. Our first year to try this, 2nd period started out pretty good despite the long exposures (4-6 minutes). 4th period didn't do so well because of the MUCH shorter exposure. We changed to 1-2 minutes, but it should have been 30 seconds. By 7th period, many people were getting their best results from 20-40 seconds depending on the scene. Actually, this wasn't that far from the instructions which stated to to use 5-7 min for overcast, or 30-60 sec for sunny.
Keep camera VERY still. Place a hand on top of the camera when opening the shutter. If it moves a tiny bit at first, it will be ok. But if you are moving it around for 5 seconds at the beginning, and then again 5 seconds to close it up, when the exposure is only 30 seconds, you are going to get a blurry picture.
Keep track of what camera you shoot 1st. i.e. shoot low #ed camera 1st. Lots of people were shooting the same camera twice, and the other camera not at all.
Keep lid #s and can #s together. #1 and #1...it helps tremendously with organization.
Keep your lens cover pressed flat when walking around so it doesn't flap open.
Put cap on, then back bag, then rubber band.
Shoot stuff that is good contrast and close up. Objects close to the camera will do the best.
Shoot a self portrait. Put the can right in front of you, with your face to the sun, open the shutter, time the exposure, then close the shutter.
Shoot plenty of 5x8s.
Vertical vs. horizontal. The 5x8 can go either way...for different effects. Horizontal does better...just be sure to center it in the camera.
Make sure the "lens plate" is secure and not falling off allowing light to "flood" your can.
ABSOLUTELY, put your period and first or last name on the back of your sheet of paper. PLEASE don't neglect to do this. It gets VERY difficult to sort through pinholes with no names.
Negative to Positive
You will need to make a TEST strip first
Cut one of your pieces of paper into small strips. (5x8 into 1.5"x5" so that each piece makes about 4)
Place a small strip of paper face up under the enlarger at 20" (make sure the light is off).
Place your negative image face down on the test strip.
Cover with glass.
Expose for 30 seconds at f3.5 (that means wide open...or max light).
Evaluate - Based on YOUR evaluation, increase time to make darker. Decrease time to make lighter.
Make your print by placing a large sheet of paper (5x8 for a 5x8, 5x7 for a 5x7) under your negative and the glass.
*Hang on to your Pinhole Positive...I will call for them all at once. You may also want to shoot your negative with you cell phone and/or digital camera.
See Digitizing a photo with your Cell Phone - Photogram or Pinhole Negative
Samples (see more in the Public Folder of "Examples, Resources for Student Projects")
Negative...initial image Positive....2nd image