Re: Zone Plate Image Generator

Guy,
 Yup, it makes perfect sense. You're right, mounting usually involves cutting away most of the film. I'll look into generating multiple zone plates per image. It should be relatively simple. Then, if Eric wants to make zone plates to sell, he can do it economically by having many images in one frame.

I also thought about contact printing the image after I get the first one back.

Larry
    -----Original Message-----
    From: Guy Glorieux <guy.glorieux@sympatico.ca>
    To: pinhole-discussion@pinhole.com <pinhole-discussion@pinhole.com>
    Date: Thursday, December 28, 2000 9:08 AM
    Subject: Re: [pinhole-discussion] 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 12:23:01 2000