Re: New Camera Design

It says extreme depth of field... and I would think that f/256 with a 2"
focal length would be pretty extreme depth of field. I remember seeing this
camera once before... maybe somebody posted it to the list? I'm curious if
anybody has one. It seems like a lot of money for something that can be
home-made pretty easily.

John

----- Original Message -----
From: "Richard M. Koolish" <koolish@bbn.com>
To: <pinhole-discussion@pinhole.com>
Sent: Sunday, March 11, 2001 4:58 PM
Subject: Re: [pinhole-discussion] New Camera Design

> > I ran into this the other day, and thought list members might find it
> > interesting.
> >
> > <A HREF="http://www.qualitycamera.com/zone%20plate%20.htm">Untitled
Document
> > </A>
> > Kurt Norlin
>
>
> Their introduction says a zone plate has infinite depth of field.
> That's wrong. Unlike a pinhole, a zone plate does focus light
> and has the same depth of field as a lens of similar focal length
> and f number.
>
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Received on Mon Mar 12 01:29:39 2001