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Braun Reflex-Ultralit 2.8/50mm
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PostPosted: Wed Jan 03, 2024 10:18 pm    Post subject: Reply with quote
OK - here you are ... After dismantling the lens we can says that this is the approximate lens section of the Braun Reflex-Ultralit 2.8/50mm:



As I had (correctly) assumed from the reflections, we have an inversed Elmar design. Neither the original Leitz Elmar 3.5/5cm nor this inversed Elmar (ie the Braun Reflex-Ultralit 2.8/50) can compete with the postwar Zeiss Tessar 2.8/50mm, let alone with the Rodenstock Ysarex 2.8/50mm (which is the best vintage Tessar type lens I own).

Front lens (doublet):


Rear lens (singlet):


Remaining central (negative) single lens:



Mystery solved, again!

S


PostPosted: Thu Jan 04, 2024 1:58 am    Post subject: Reply with quote
stevemark wrote:
OK - here you are ... After dismantling the lens we can says that this is the approximate lens section of the Braun Reflex-Ultralit 2.8/50mm:



As I had (correctly) assumed from the reflections, we have an inversed Elmar design. Neither the original Leitz Elmar 3.5/5cm nor this inversed Elmar (ie the Braun Reflex-Ultralit 2.8/50) can compete with the postwar Zeiss Tessar 2.8/50mm, let alone with the Rodenstock Ysarex 2.8/50mm (which is the best vintage Tessar type lens I own).

Front lens (doublet):


Rear lens (singlet):


Remaining central (negative) single lens:



Mystery solved, again!

S

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PostPosted: Thu Jan 04, 2024 4:21 am    Post subject: Reply with quote
I have two other lenses of similar layout that I have disassembled, although I can't recall where the aperture was positioned to say if they were of standard Tessar or Elmar variant. The first is the Isco-Gottingen Westanar, I've tried two copies of that lens, neither of which I found to be outstanding. The other was the Tamron-made Soligor Miranda 50/2.8 supplied with the Miranda S and also as the budget option for other models instead of the Kowa-made 5cm/1.9. That lens is fairly well regarded, particularly when used with extensions, although looking back through my test shots my copy was also not outstanding. The best Tessar type I have a record of from my own testing is the Yashinon 5cm/2.8 sold as a budget option for their J series cameras.


PostPosted: Thu Jan 04, 2024 9:05 am    Post subject: Reply with quote
stevemark wrote:


Mystery solved, again!

S


Thank you for the evidence. At least one lens type of the two (I recalled from memory) fits the actual lay-out of this lens then.
My favorite Tessar types are the Vito BL Color Skopar 50mm 2.8 that has an FE mount now, unit focusing and a Yashica YK Yashinon 45mm 2.8 also with an FE mount now, unit focusing too.
With 6x6, 6x9 and 3.5×4.5" folders it was respectively the Iskra Industar 58 75mm 3.5, the Kodak Anastigmat Special 101mm 4.5 and the Ysarex 127mm 4.0.


PostPosted: Thu Jan 04, 2024 4:28 pm    Post subject: Reply with quote
Alun Thomas wrote:
I have two other lenses of similar layout that I have disassembled, although I can't recall where the aperture was positioned to say if they were of standard Tessar or Elmar variant. The first is the Isco-Gottingen Westanar, I've tried two copies of that lens, neither of which I found to be outstanding. The other was the Tamron-made Soligor Miranda 50/2.8 supplied with the Miranda S and also as the budget option for other models instead of the Kowa-made 5cm/1.9. That lens is fairly well regarded, particularly when used with extensions, although looking back through my test shots my copy was also not outstanding. The best Tessar type I have a record of from my own testing is the Yashinon 5cm/2.8 sold as a budget option for their J series cameras.


Alun,
The rangefinder Yashica 35 J series with fixed lenses? Should that not be a 45mm then and almost identical in shape to my Yashinon 45mm 2.8 of the Yashica 35 YK ?
Or one of the rare Yashikor exchangeable 50mm 2.8 LTM mount lenses, either Xenotar or Tessar types.
There was also the SLR Yashica J series with M42 mount but a 50mm 2.8 is harder to find there.


PostPosted: Thu Jan 04, 2024 5:16 pm    Post subject: Reply with quote
Ernst Dinkla wrote:
Alun Thomas wrote:
I have two other lenses of similar layout that I have disassembled, although I can't recall where the aperture was positioned to say if they were of standard Tessar or Elmar variant. The first is the Isco-Gottingen Westanar, I've tried two copies of that lens, neither of which I found to be outstanding. The other was the Tamron-made Soligor Miranda 50/2.8 supplied with the Miranda S and also as the budget option for other models instead of the Kowa-made 5cm/1.9. That lens is fairly well regarded, particularly when used with extensions, although looking back through my test shots my copy was also not outstanding. The best Tessar type I have a record of from my own testing is the Yashinon 5cm/2.8 sold as a budget option for their J series cameras.


Alun,
The rangefinder Yashica 35 J series with fixed lenses? Should that not be a 45mm then and almost identical in shape to my Yashinon 45mm 2.8 of the Yashica 35 YK ?
Or one of the rare Yashikor exchangeable 50mm 2.8 LTM mount lenses, either Xenotar or Tessar types.
There was also the SLR Yashica J series with M42 mount but a 50mm 2.8 is harder to find there.


It's the one from the SLR J series, usually sold with a JP camera, their update to the Penta J.


PostPosted: Thu Jan 04, 2024 5:39 pm    Post subject: Reply with quote
I've only ever seen Js with the also awesome (semi) Auto Yashinon 5cm f/2 attached, also a fantastic lens. I believe that one's a 6 element Double Gauss. Supposedly it's a Tomioka design, but it shares mechanics and styling with some of the early Takumar semi-autos, so a bit of a mystery.

Alun Thomas wrote:
Ernst Dinkla wrote:
Alun Thomas wrote:
I have two other lenses of similar layout that I have disassembled, although I can't recall where the aperture was positioned to say if they were of standard Tessar or Elmar variant. The first is the Isco-Gottingen Westanar, I've tried two copies of that lens, neither of which I found to be outstanding. The other was the Tamron-made Soligor Miranda 50/2.8 supplied with the Miranda S and also as the budget option for other models instead of the Kowa-made 5cm/1.9. That lens is fairly well regarded, particularly when used with extensions, although looking back through my test shots my copy was also not outstanding. The best Tessar type I have a record of from my own testing is the Yashinon 5cm/2.8 sold as a budget option for their J series cameras.


Alun,
The rangefinder Yashica 35 J series with fixed lenses? Should that not be a 45mm then and almost identical in shape to my Yashinon 45mm 2.8 of the Yashica 35 YK ?
Or one of the rare Yashikor exchangeable 50mm 2.8 LTM mount lenses, either Xenotar or Tessar types.
There was also the SLR Yashica J series with M42 mount but a 50mm 2.8 is harder to find there.


It's the one from the SLR J series, usually sold with a JP camera, their update to the Penta J.


PostPosted: Wed Mar 13, 2024 11:12 pm    Post subject: Reply with quote
I got one of these with a working (motly) Paxette Reflex Automatic camera. Also a Rodenstock 135mm F4 with case in DKL. I tested it this afternoon an I would say...Enna. Bad lens. Soft at pretty much every aperture. It does have nice clear optics and the robust DKL housing but optically it is worse than any Staeble lens I hae ever tried. enna has some highly regarded glass.. I have never tried any of their fast portrait lenses swhich command prices I am unwilling to pay. I don't really do a lot of portrait so ther's that. But Enna glass has failed to impress time and time again.
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