here is my first try, please if anyone can help to get a better pic, please let me know. Made from my camera cover, piece of PVC pipe, foil over this with a very small pin hole. (5 years and 3058 days ago)
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Author, to get rid of the vignette, try shortening the tube a bit to allow more of the image to fall on the sensor. Also, take sandpaper (very fine) to hone the edges of the tube at the cut-off end. It appears your 'lens' or hole is very jagged...try re doing the hole with a fine sewing needle very carefully as irregularities will result in poor focus...GL
Howdie stranger!
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