On Wednesday, July 03, 2002, Justin Bell wrote:
[...]
> In doing so, I made another pinhole. But now I have tried 2 pinholes with
> the new modified focal length, and I'm getting 'rings' on the photo
> (http://soupisgoodfood.net/temp/pinhole.jpg, sorry for the poor photo, I had
> to take a digi of it using my monitor as a lightbox :).
> I'm guessing I didn't see the rings before I changed the focal length
> because it fell outside the frame.
> What do you think is causing it? Pinhole too small/refaction of light? The
> fact that I made it from heavy aluminium foil (one of those pie trays that
> comes with frozen pies to be exact). The "drill" method?
It looks like light reflecting off the inside edge(s) of your
pinhole.
-- Scott Sellers mailto:scottsellers@mindspring.comReceived on Sat Jul 6 12:16:42 2002
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