Sneebo,
Right on both counts. You think this is a Biogon type design? I have
quite a bit of Modern aero lens brochures and stuff that someone
formerly from Recon Optical gave me, But nothing that shows what these
things look like inside. One really wierd/cool thing is that if you
look through
Gene-
The lens you have I believe probably is f4.5 and not
mounted in a shutter? The Biogon has a lot less extra
packaging. I've had a chance to play with both lenses
on an optical bench. They measure exactly the same
front to back and the glass on both front and rear
elements had the same dimens
Anybody on the list have a short (1-3 inch) cable release sitting in a
drawer? I've seen them on old Speeds and Crowns.
Thanks!!
Dirk
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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
Sneebo,
This lens was made by Pacific Optical, but does not resemble any Biogon
I've ever seen. It is REALLY big. About four an a half inches of glass
diameter up front and 4 or so in the back. Weighs at least five
pounds. It is really a challenge trying to marry it to the graflex
body.
Gen
Hi George,
I saw a photo taken with a lens like this and it's not as bad as it
sounds, but we'll see when i actually take some pictures. I have been
hoping the fall off would improve with it stopped down to f8 or so. Is
that a reasonable assumption? I've heard differing opinions on that.
Gene
John,
A super wide 6x6 would be awesome. I've seen one that was made with a
peephole from a door divided into two parts and glued into a shutter in
place of the old elements! pretty extreme, but the images were better
than you'd think. Wide angle lenses for med. format seem to be real
hard to
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
I just received my first digest from the list after subscribing a few weeks
ago. I am presently making a stereo wet plate camera and plate holder. The
glass plate ends up to be 3.5 X 7 inches. I am making the camera out of
plain old pine or fir from home depot and the plate holder out of Masonite
I believe Pacific Optical made some lenses very
similar to the Zeiss Biogon 75mm f4.5 for their aerial
cameras.
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- Original Message -
From: "Gene Johnson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, December 30, 2000 5:49 PM
Subject: Re: [Cameramakers] Aerial recon lenses
> Hi Leonard,
>
> You are my first actual contact with a member of this group. The lens
> is from a Pacific
- Original Message -
From:
John Yeo
To: [EMAIL PROTECTED]
Sent: Sunday, December 31, 2000 5:44
AM
Subject: [Cameramakers] Making lens focus
farther from film.
Hello Group,
I am toying with the idea of making a 6x6
superwide camera. I have a 28mm
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