Carl Zeiss Jena - 135/6.3

[tinybynature]

Hello Everyone

I am new here and have just recently purchased a barrel lens, that I could use a little more information about.



I have been told, that when the aperture is missing, there is a good chance the cemented doublet is also missing. Can anyone verify this, from the images?

I will be receiving the lens in about 2 weeks and was also wondering, if there is an easy way to tell if it is a complete lens unit, without taking it all apart?

Any other information about this lens, would be greatly appreciated. I have been reading through this document http://www.arnecroell.com/czj.pdf (very interesting history of Carl Zeiss Jena) and I see this lens posted as having a barrel lens production run of 811. Looks like the serial numbers indicate a production date of between 1957 - 1960.

I have noticed that there is very little information online about this lens, so it must be a little uncommon?

Thanks for all the help and I look forward to all the interesting feedback!!

[Bill Burk]

Looks like it's designed to be used on an optical bench. Pretty cool.

[E. von Hoegh]

If it's complete, it should be possible to slit the barrel for waterhouse stops. If this is like the F6.3 Tessars I've had or used, it's a very good lens. It should just cover 4x5, the corners may be soft until you stop it down.

[tinybynature]

Looks like it's designed to be used on an optical bench. Pretty cool.

I thought it was different

It will be here in about two weeks, but in the meantime I am dying to know if it is complete, with all elements in tact??

There is no aperture, but not a big deal, as I can use it wide open. I am just concerned now, after what I have been reading, that the rear element (cemented doublet) is missing.

danfromm told me that if it is missing elements, it will not produce an image when looked through. I guess we will see

[Sevo]

I thought it was different

It will be here in about two weeks, but in the meantime I am dying to know if it is complete, with all elements in tact??

Looks like it - I can see five reflections, so it can be nothing less than a Triplet. The sixth missing reflection must exist (lens/air surfaces only occur in even numbers) but will be hidden by the barrel, and I don't expect the two more faint ones that close inspection would reveal on a Tessar to be visible in a photograph against a bright background.

[tinybynature]

Looks like it - I can see five reflections, so it can be nothing less than a Triplet. The sixth missing reflection must exist (lens/air surfaces only occur in even numbers) but will be hidden by the barrel, and I don't expect the two more faint ones that close inspection would reveal on a Tessar to be visible in a photograph against a bright background.

I have inserted one of the photos below and have circled what I see as 4 reflections. (if that is even what you are talking about, as I have never heard of this before). Where do you see a 5th?

Thanks for this info



I just found this. It explains refection differences between a triplet and a Tessar. Very interesting!! I am glad I joined this forum
http://rick_oleson.tripod.com/tessar.pdf

[Sevo]

Look at the third, diagonal, image, and count the reflections of the bulb rather than the lamp shade.

[tinybynature]

Look at the third, diagonal, image, and count the reflections of the bulb rather than the lamp shade.

I see it Thank you.

A definite 4 reflections towards the center, with a 5th to the upper right of the element That 5th, looks like it could in fact be two bulb reflections, very close together??

That gives me hope, of a complete lens.

[tinybynature]

Would anyone know per chance, what the Register Length, of this lens would be?

[Dan Fromm]

For heavens sakes. It is a 135 mm Tessar in a who-knows-what mount. The lens rear node-to-film plane distance at infinity is by definition 135 mm. The rear node is fairly close to the barrel's midpoint. 120 mm or so from the back of the mount is a good conservative (= probably too short) guess.