I have seen some nice pinhole photography. Mostly are black and white. The pinhole lens is actually not a lens but only a hole. There is no glass, no coating, no focusing ...
I have owned several EOS cameras. When they were gone, they left me the camera cap.
I used the camera cap to make a pin hole lens.
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Step 1: Materials
1. A camera cap.
2. A tin foil - 1"x1" is enough
3. Some tape
Step 2: Make a Hole
Drill a hole at the center of the lens cap. Clean the hole and remove all debris as they will fall on the CMOS sensor.
Step 3: Seal the Hole
The hole we just drilled is far too big. It is to be sealed by taping the tin foil on it. We use tin foil because it leaks no light. Paper or plastic sheets may me leaky.
Step 4: Punch the Hole
Use a pin to make a very tiny hole on the tin foil.
Step 5: Done
Screw the cap on the camera and start shooting.
Step 6: A Sample Photo
Through the viewfinder of the camera all you can see is complete darkness because the hole is too small for visible amount of light to pass through.
You need a tripod and set the exposure to "Bulb". It is going to take some trials and errors to get the first picture.
If you can't wait, you may try to use a flash.
The big nut is taken by the pinhole lens with a flash. The camera is set to monochrome.
More pictures are posted at my blog.