Re: New Camera Design

Pin@davidmorton.org wrote
>
> Kurt Norlin wrote:
>
> "I ran into this the other day, and thought list members might find it
> interesting.
>
> http://www.qualitycamera.com/zone%20plate%20.htm "
>
>
> Interesting, but is there much point in a ground glass screen on such a
> camera? Can you actually see anything useful when looking at the image from
> an f/512 pinhole or f/256 zone plate?

    I put a zone plate on a Speed Graphic and found that the ground
    glass could be used to set the focus, provided it was pointed
    at something very bright, like sunlight glinting off a highlight.
    And since a zone plate does have to be focussed, it was useful
    to have the ground glass available.
Received on Sun Mar 11 21:44:40 2001