Re: New Pinhole Camera Decision...

Yes very easily. A pinhole camera is just simple geometry. Thus if you
know the distance from the pinhole to subject, and subject height you
can easily calculate how big it will appear on the film.

e.g.

Subject 2 m high and 3 m away. Assuming subject is central in the image
thus tan(angle) = 1/3

You know the Zero has a 50mm distance of pinhole to film plane thus
tan(angle) = x/50 (where x is what you want to know)

= (1*50)/3 = 16.6mm either side of the centre.

----- Original Message -----
From: "Colin Talcroft" <ctalcroft@yahoo.com>
To: <pinhole-discussion@spitbite.org>
Sent: Friday, December 29, 2006 5:47 PM
Subject: Re: [pinhole-discussion] New Pinhole Camera Decision...

With the lens
> camera I can see how big the figure is. With the
> pinhole camera, I can't. I guess what I'm asking is
> this: given the specs of a pinhole camera, can you
> easily calculate the size of the image of the subject
> formed on the film?
>
> Hope this makes sense
>
> Thanks
>
> Colin
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Received on Fri Dec 29 04:49:19 2006