Re: Zero pinhole camera

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From: Pam Niedermayer (pam_pine@cape.com)
Date: 05/08/00-12:03:13 PM Z

I'll have to try this. I would have guessed that you had to
have two slits to get an interference pattern of light and
dark, but sounds like that would have been a wrong guess. A
whole new avenue to pursue.

Thanks,
Pam

erobkin@uwc.edu wrote:
>
> If you shine a beam of light through a pinhole the image you get has
> alternating rings of dark and light because of interference phenomena. A
> zone plate is an idealized version of those images with the dark rings made
> completely opaque and the light rings as clear as possible. Because of
> interference actions light shining through the zone plate behaves like it is
> going through a pinhole but the amount of light is increased.
>
> Much detail and technical tradeoffs between pinholes and zone plates left
> out.
>
> More detail on line under a zone plate search.
>
> ER
>
> -----Original Message-----
> From: alt-photo-process-error@skyway.usask.ca
> [mailto:alt-photo-process-error@skyway.usask.ca]
> Sent: Sunday, May 07, 2000 11:52 PM
> To: alt-photo-process-l@skyway.usask.ca
> Subject: Re: Zero pinhole camera
>
> What exactly is the Zone plate Zeroimage talks about on
> their site? It appears to be some sort of replacement
> pinhole, but it's not clear.
>
> Thanks,
> Pam
>
> James Romeo wrote:
> >
> > ----- Original Message -----
> >
> > From: jromeo@iopener.net
> > To: alt-photo-process-l@usask.ca
> > Subject: Zero pinhole camera
> > Date: Sun, 7 May 2000 23:20:09 -0400
> >
> > Charlie talkes about the Zero 2000 pinhole camera.
> > The camera is a work of art and great to work with.
> > I bought one a few months ago from Zeroimage it is made by a craftsmen in
> > Hong Kong.
> > If you by it from him on line from Hong Kong it is $85.. plus $ 10
> shipment air.
> > You get in about a week Its 120 6x6 he is going to make some 6x9 and 6x12
> > You can get a good look at it and how to order on his site
> > www.zeroimage.com
> > James Romeo
> > ----- Original Message -----
> >
> ...
> --
> Pamela G. Niedermayer
> Pinehill Softworks Inc.
> 1221 S. Congress Ave., #1225
> Austin, TX 78704
> 512-416-1141
> 512-416-1440 fax
> http://www.pinehill.com 

-- 
Pamela G. Niedermayer
Pinehill Softworks Inc.
1221 S. Congress Ave., #1225
Austin, TX 78704
512-416-1141
512-416-1440 fax
http://www.pinehill.com

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