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walkaboutcamera
PostPosted: Fri Sep 25, 2009 10:04 am 
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Anyone know what the effective focal lenghth and fstop are on the Diana F+ or + camera in pinhole mode?
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myxamop
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PostPosted: Fri Sep 25, 2009 4:04 pm 
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the F number would be a little harder to calculate but the focal length is the distance from the whole to the film.
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walkaboutcamera
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PostPosted: Fri Sep 25, 2009 6:45 pm 
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Yes thank you, and the effective fstop would be the focal length or the distance of the pinhole from the film plane divided by the dia. of the pin hole. But does anyone own a Diana F+ or +, what does the manual say?
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walkaboutcamera
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PostPosted: Sat Sep 26, 2009 10:15 am 
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OK seek an' ye shall find.

http://www.flickr.com/groups/diana_plus/

There is another group for the original Diana.

The effective fstop is 150. There is a good set for pinhole pictures to see what they are like. The next time I'm by Urban Outfitters I will pickup a Diana F+.
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