On Tue, Sep 12, 2000, Kosinski Family wrote: > Pinhole wizards, > By chance, I photographed a needle and projected it, only to > find it had 2 different angles of taper and the diameter was > different everywhere along the length of the needle! Checked a > lot more needles and found the same thing. The question: where > on the needle does the diameter from the much published chart > of needle size / diameter apply? If this chart turns out to be > mythological, it will only increase my esteem for the inexact > art of pinhole photography.
Once you get past the pointy end, beading needles are mostly cylindrical. If you can get your hands on one, an easy way to measure a needle is with a micrometer. Then, even with a tapered needle, you can mark how far to poke it through to achieve the desired diameter. -- Scott Sellers (s...@cts.com)
