Over the years there have been lots of small cameras still using the
venerable
Tessar design.
Agreed. There are only so many ways to efficiently slay the aberration
jaberwockies. Here is a history of the Tessar patented by Zeiss:
www.zeiss.com/content/dam/.../cln39_en_web_special_tessar.pdf
I always thought given its design it was just developed by modifying
the Cooke triplet (1890's?) in which one of the exterior positive
elements has been replaced by a cemented group to create the Tessar,
but its origin was different. Again efficient design leads to similar
solutions. The Heliar does seem to have been an offshoot of the triplet.
Using modern glass variations the degrees of freedom available has
increased dramatically and superb simple lenses are possible. I think
Andrew has an expensive elegant Cooke triplet of recent design. Where
is our venerable list curmudgeon anyway?--he should be back by now.
One Cooke triplet I still like is the Meyer-Optik Görlitz Trioplan 100
mm f/ 2.8 Lens in M42 mount. I did try and snipe a few but the price
has gone way way up the past few years. It just has a wonderful
rendering and very nice bokeh. (IIRC the version with red V on it has
the best coatings)
3 or 4 can be plenty, Mike
--
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