3 month coke can exposure: What projection would you call this?
In a national newspaper today there was an article on long (3 month) exposures using a coke can, a pinhole, and some photographic paper. The results appear to look quite similar to a cylindrical projection and are quite cool, so I thought I'd share. Hope it's not a repost:
http://www.solargraphy.com/ - with a good how too guide.
The actual projection itself appears quite interesting. The pinhole as I understand it should give a rectalinear shot onto a flat plane, so the effect must be down to the curving of the film plane within the can. I don't think the projection could be a pure cylindrical as when the angle increases the paper gets phycisally closer to the pinhole .....but if the pinhole was in the middle of the can, then I think perhaps it would be?
So. If we cut a can in half and put the pinhole in the middle of the can, could we get a few (say 3) cans rotated 120deg apart to make a 360 pano from the result? And if so, is it worth 3 months effort? :-D
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