jamesromeo wrote:
> The book that came with the camera list specification
> pinhole effective focal length 55 mm
> pinhole aperture f 259
> neg size 48mm x 125 mm
> it is a pan camera view angle 130 deg
>
> I would like to get a new pinhole made
>
So, let's calculate: focal length 55 devided by f/stop 259 makes a
pinhole of 0,212 mm devided by 2,56 makes the same as 0,083 inch. If you
are not an absolute newcomer, you must know that in pinhole we don't
look at the very fine, absolute details. Some time ago, I bought a set
of different sized micro-drilled pinholes from the pinhole resource
http://www.pinholeresource.com/
and still have a spare one of 0,087 inch. Not exactly the required size,
but quite close to it, making it an f/stop of 222.
If you are interested, please send your snail mail address to my private
e-mail address at
taco@thoma.be
and you can have it for free.
Taco
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Received on Tue Sep 14 09:50:34 2004
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