Re: Zone Plate Image Generator

Larry,

Many thanks for this great little tool! I needed a 30mm zone plate for
one of my short focal cameras but the last I knew from Eric Renner when
I was looking for that short focal length is that he did'nt have any.

It occured to me that this is very tiny little spot on a 35mm film size
(24x26mm), with a lot of wasted film around it that has to be cut out
anyway to fit on the hole of the camera.
So what I want to do is to place several zone plates on the same 24x36mm
space. I could do this by generating several zone plate files and then
cutting and pasting them with Photoshop on one single sheet of film.
Or, if you have friends who want zone plates as well, you could share
the cost of the lab by placing perhaps 4 zone plates on the same sheet
of film.
Seems to make sense. Does it?

Larry Fratkin wrote:

> Folks, I have created a zone plate image generator so that I could
> make my own zone plates. The program downloads a .BMP so it's PC
> centric, I think. The idea was to use the program to generate a zone
> plate image and then take it to the bureau to have it put to film.
> They charge about $15.00 for this. I haven't tried it out yet so I
> don't know how well it works. I'll be visiting them on Friday and I'll
> drop it off then. The calculator/generator is at
> http://www.MrPinhole.com/zp.html Larry_at_MrPinhole.com
Received on Thu Dec 28 12:06:05 2000