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Lens Carl Zeiss Jena Tessar 80 mm f/ 2.8 T


1.
AnDRAW40 :: 08.01.2020 19:41:56


lvl. 1 (Lens-Learner)

Lens Carl Zeiss Jena Tessar 80 mm f/ 2.8 T
Format: 35mm SLR

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: M42, M42, Exakta, Exakta

First year of production: 1951

Last year of production: 1951

Optical scheme: 4 elements in 3 groups

Optical scheme



Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr.)Height (mm.)
80mmf/2.8f/16161.04926090

 

2.
AnDRAW40 :: 08.01.2020 20:31:51


lvl. 1 (Lens-Learner)

Hello! 

I just bought this lens with Exakta mount and looks almost identical with the one in pictures here. Diferences are:
- mine goes to f/22 not only f/16 (obviously, it is marked till f/22)
- distance inscription is only in feet.

I had put it on a Canon 5d mk4 with Fotodiox Pro Lens Mount Adapter - Exakta to EOS. Overall I like it very much; it is very sharp from f/4, but wide open it is only decent. Also at f/2.8 image it is a bit washout. Contre jour performance it is way under my expectation for a Zeiss glass. (WB on shade, jpg from camera)

The tests were brief as the adapter was borrowed. Anyway, my lens have a bit too much dust on internal lens and the focus is working a bit too hard. 

It is anyoine who knows how to open it to clean&grease the focus filets and to clean the lenses, please? Thank you!


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