Caltar lens sharpness

wrote:

Sorry to labor the subject, but when I bought the Caltar, the shop
owner told me that it was made by Horseman (a Japanese company). Not
that I care, but am just curious.


That is correct. The (short lived) HR series of Caltar lenses were made
in Japan by Horseman. They were not made by Rodenstock. I once owned a
210 f/5.6 plasmat from that series.

James Meckley

wrote:

Sorry to labor the subject, but when I bought the Caltar, the shop
owner told me that it was made by Horseman (a Japanese company). Not
that I care, but am just curious.


That is correct. The (short lived) HR series of Caltar lenses were made
in Japan by Horseman. They were not made by Rodenstock. I once owned a
210 f/5.6 plasmat from that series.

James Meckley

Wonderful bunch of posts! Many thanks to you all for excellent
replies!

Will shoot some film with a yardstick and marker at f/16 with both
lenses and see what it looks like. Will set it up first with the same
lens to subject distance and compare results. Then try it with the
yardstick filling the frame with both lenses and compare those
results. I don't have time at the moment to think about any other way
to compare two lenses that are 2X apart in focal length.

BTW... the ground glass is not a fresnel type, but just a simple
random etched type (sandblasted?). I assumed (dangerous) that if it
was sharp with the Schneider it would be the same with the Caltar.
Never considered that the Caltar might project onto the ground glass
differently. The Caltar does generate a hot spot on the ground
glass, which seems to be normal given the angle of incidence.

Best regards to all! Great listserve!