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Old March 19th 07, 12:57 AM posted to rec.photo.digital
Ol' Bab
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Posts: 9
Default ... thinking about making a CAMERA OBSCURA.... Big lens

I have an aerial camera lens. 14 lbs. 12" focus, f/2.5. (Twelve inches
is probably too short?) No shutter.

Please take it off my hands, give it a home. Anybody.

Drop by my house, take it away, or pay for shipping. Upstate NY.

Ol' Bab (olbab AT rochester.rr.com)



Don Stauffer in Minnesota wrote:
On Mar 12, 8:41 pm, King Sardon wrote:
I'm considering building a camera obscura to project prints. ...

The most critical component is probably the lens. It should probably
have a focal length of 500-800 mm and a diameter of at least 3 inches....

KS


...

Also old aerial cameras used such focal lengths, and I have seen
surplus aerial camera lenses at surplus sites- bought a couple a
number of years ago.