Re: Pinhole diameter help

From: George L Smyth <glsmyth_at_domain.name.suppressed>
Date: Thu 31 Aug 2000 - 04:58:11 PDT

--- Tom Purdum <javaboyone@yahoo.com> wrote:
> Ok,
> I have been doing a bit of reading but I am a bit
> confused. Being that this is my first pinhole camera
> I am a newbie. I figured out my pinhole diameter to
> be 0.22 for a 1.5in focal length and an F-stop of 167.
> Is this right? I just don't want to screw it up and
> was hoping someone on the list could maybe check my
> math so to speak. I just have a funny feeling that
> this is not correct.

Sounds about right to me. What I do is to make about a dozen pinholes at a
time. I then measure and label them. When I make a camera, I look through my
pinholes and select the one that is closest to the size I need. If there isn't
one, it's time to make another dozedn.

BTW, I mount mine in slide holders. This makes it easy to makes notes and file
them away for easy retrieval.

Cheers -

george

=====
Handmade Photographic Images
http://members.home.net/hmpi/

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Received on Thu Aug 31 07:58:12 2000

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