Re: Zero 2000 Zone Plate?

I thought zone plates couldn't be made for that short of a focal length.
It's been a while since I've read up on those though.

Thanks for the info.

Dwight

----- Original Message -----
From: Chris Peregoy <peregoy@gl.umbc.edu>
To: <pinhole-discussion@pinhole.com>
Sent: Sunday, August 27, 2000 11:10 AM
Subject: Re: [pinhole-discussion] Zero 2000 Zone Plate?

> I clipped this from the zero 2000 page at http://www.zeroimage.com/
>
>
> *Zero 2000 Zone Plate camera is now available:
> Now you can order the Zero 2000 with Zone Plate instead of pinhole. The
> zone plate is 9 zones and with focal length of 25mm. The "aperture" is
> f-47.6. The price is as the Zero 2000 pinhole camera.
>
>
>
> --
> -
> Chris Peregoy
>
>
>
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Received on Sun Aug 27 14:46:57 2000