John, Are you mounting 2 elements into the shutter, 1 in front, 1 in back? or are you mounting an entire lens to the front of the shutter? I have some process lenses mounted on the front of this type shutter and just use the aperture in the process lens. I'm sure you wouldn't have asked if that were the case though. I can tell you what iris diameter the stops are on my 210 Repromaster out to f8.
f8 22.5mm f11 16.0mm f16 11.3mm f22 8.0mm I could calculate back by multiplying by 1.41 to get: f5.6 31.7mm f4 44.7mm That should do it. I have no idea how close these will be for your lens, but I wouldn't think they would be very very far off. Richard may have a better idea. Gene ----- Original Message ----- From: "John Cremati" <[EMAIL PROTECTED]> To: "E-mail discussion about homemade cameras" <[EMAIL PROTECTED]> Sent: Sunday, May 16, 2004 12:25 PM Subject: Re: [Cameramakers] shutter modification. > Your right there was a stop and I just bent it down and the shutter > now is able to open fully ( about a extra 1/2 inch in the overall diameter > was achieved ..Now I have to figure out how to callibrate the f-stops to the > new lens. Can any one shed some light on that?. I suppose I just use a set > of callipers and measure off of the old lens appeture settings to diameter > of opening and make a new plate and etch the stops by transfering the > measurements.. ... jc > > > _______________________________________________ > Cameramakers mailing list > [EMAIL PROTECTED] > http://rosebud.opusis.com/mailman/listinfo/cameramakers > _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rosebud.opusis.com/mailman/listinfo/cameramakers
