View Full Version : PITB Question: what lens is this?
Trying to figure out the lens - without a good photo...over the phone..with an elderly gentleman
found a camera set for sale a good distance away... the guy is 81, and it was his dad's set up
camera is a Gundlach Criterion 8x10 (that much I figured out) and lens is described as:
Gundlach - Manhattan opt. co. Rochester. N.Y. - Equi. Focus 12 in.
when asked he said the numbers on the side were - 64 (f64 I guess) and the other end 191 (?)
at first I thought that it might be a process lens as they often times had equivalent focal lengths on them
then I got to thinking..maybe it was marked in the old US F stop system..so '191' is actually 1.91 or about f5....
or not
here is a small pix:
106830
ready, set, go!
hoping it's something cool that I can use
Jim Noel
18-Dec-2013, 21:10
There have been lenses in the past which were not marked with any f-stops. Instead they were marked with the diameter of the iris, the f-stop was then computed by the photographer.
There have been lenses in the past which were not marked with any f-stops. Instead they were marked with the diameter of the iris, the f-stop was then computed by the photographer.
looks too modern (well...20's) with the chrome ring and all...but who knows
I looked in the VC for Gundlach lenses with a maximum aperture of f9 and there were no 12" ones
there were several f5 ones however
*shrug*
E. von Hoegh
19-Dec-2013, 11:59
Trying to figure out the lens - without a good photo...over the phone..with an elderly gentleman
found a camera set for sale a good distance away... the guy is 81, and it was his dad's set up
camera is a Gundlach Criterion 8x10 (that much I figured out) and lens is described as:
Gundlach - Manhattan opt. co. Rochester. N.Y. - Equi. Focus 12 in.
when asked he said the numbers on the side were - 64 (f64 I guess) and the other end 191 (?)
at first I thought that it might be a process lens as they often times had equivalent focal lengths on them
then I got to thinking..maybe it was marked in the old US F stop system..so '191' is actually 1.91 or about f5....
or not
here is a small pix:
106830
ready, set, go!
hoping it's something cool that I can use
Judging by that picture it could be anything. We can't ID what we can't see.
Judging by that picture it could be anything. We can't ID what we can't see.
well..if I had a bigger pix..I could figure it out myself..maybe
I am just hoping someone might have it - and recognize it mostly from the description
E. von Hoegh
19-Dec-2013, 15:48
If you're lucky it could be Radar f:4.5, a nice smooth/sharp Tessar-like lens.
Keith Fleming
19-Dec-2013, 20:44
I'm away from all my info sources, but the lens could be a Gundlach f5.6 Rectigraphic (I think that's the name) set up for a more specialized use than ordinary photography. The lens I am thinking of was a variation on the rapid rectilinear style, with an extra lens element--but no real improvement over the RR.
If this is the lens I am thinking about, it actually is a triple convertible. The front cell is about 20 inches, and the rear cell about 27 inches.
Keith
Keith Fleming
19-Dec-2013, 21:19
I did some online research. The lens I was thinking about actually is the Gundlach f5.6 Perigraphic, 12-inch for 8X10. The front cell of that lens has a focal length of 28 inches, and the rear cell is 20.5 inches. Sorry for the error in my previous post.
Keith
My "Ilex Symmetrical 8x10" looks very much like this one front-wise. It is F8. Most likely here is late symmetrical RR/Aplanat.
Definitely not large format, I mean, look at the size of it - barely a centimeter end to end. Probably from to a smart phone - thread needs to be moved.
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