Hi Leonard,
The measurements you have are correct. The reason the front element
looks so large is that there is a fair amount of metal around the
glass. On the back the diameter you see is almost exactly the dia of
the GLASS. No way I could use the lenseboard or the bellows. basically
had to gut the speed, and make a sort of goatskin diaphram. Hard to
describe, when I get a little farther, I'll send pictures. Thanks for
the msg.
Gene
Leonard Robertson wrote:
>
> Hi Gene,
> I found the 3" Pacific Optical lens in a recent Surplus Shed catalog. They
> give the front element diameter as 4 3/8" and the rear element diameter as
> 4 1/8". However, the lens shown in the picture appears to have a much
> smaller rear element than front element. What does your lens measure? Is
> the rear element small enough to fit through the hole behind the lens board
> on a 4X5 Graphic?
> I have a Graflex XL 58mm Grandagon. The rear element is too large to fit
> into a 2X3 Crown Graphic, unless you unscrew the rear element, mount the
> lens board and shutter on the camera, and screw the rear element in through
> the back of the camera. It mounts fine on a 4X5 Crown Graphic, without
> taking apart. Is that true with your lens?
>
>
> Leonard
>
> At 08:49 AM 12/30/2000 -0800, you wrote:
> >Hi Leonard,
> >
> >You are my first actual contact with a member of this group. The lens
> >is from a Pacific optical KS-87B aerial Recon camera which is a 5x5
> >format. I've checked it the best I can, and it looks to cover all the
> >way out, but with I'd guess a couple of stops of fall off at the
> >corners. I was able to find out that this lens does not use the center
> >weighted filter that some aerial lenses use like the Metrogon for
> >example. I have some photos shot through this type of lens and they
> >were beyond amazing. I have to make this work. By the way,
> >Surplusshed.com has some left on clearance for 50.00. They're reported
> >as having cleaning scratches but mine was very nice, with a June 90
> >certification sticker.
> >
> >Gene
>
> _______________________________________________
> Cameramakers mailing list
> [EMAIL PROTECTED]
> http://rmp.opusis.com/mailman/listinfo/cameramakers
_______________________________________________
Cameramakers mailing list
[EMAIL PROTECTED]
http://rmp.opusis.com/mailman/listinfo/cameramakers
