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1.9/180mm lens - anyone knows that one??
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PostPosted: Sat Mar 29, 2008 10:14 pm    Post subject: 1.9/180mm lens - anyone knows that one?? Reply with quote
I have a lens since some time which is said to be made by Carl Zeiss Jena, but honestly I doubt that and there is no sign on it indicating that.

It is a f1.9/180mm lens, very very heavy and a hunk of glass, has a built in aperture (which can be fully closed!?). Front lens is ca 95mm diamater and weight is about 2 Kilos.

I thought it might have been from a night vision system due to the f1.9 and the aperture which can be closed (to protect an image intensifier)...

Pictures:







Any ideas??

Last edited by kds315* on Sat Mar 29, 2008 10:38 pm; edited 1 time in total


PostPosted: Sat Mar 29, 2008 10:22 pm    Post subject: Reply with quote
No idea


PostPosted: Sun Mar 30, 2008 2:59 am    Post subject: Reply with quote
Beauty!


PostPosted: Sun Mar 30, 2008 3:17 am    Post subject: Reply with quote
Possibly -

X-Ray lens ? I have seen some similar items from Kowa and Rodenstock - very large aperture.

This guy has some -

http://www.pbase.com/pganzel/superfast_x_ray_lenses_adapted_to_dslrs


PostPosted: Sun Mar 30, 2008 6:17 am    Post subject: Reply with quote
if it's an X-RAy lens, that has been used, then be very cautious in handling it. It could be really radio-active!


PostPosted: Sun Mar 30, 2008 9:14 am    Post subject: Reply with quote
It's definitely a Canon L lens. It has the famous red ring... (just joking Laughing )


PostPosted: Sun Mar 30, 2008 11:32 am    Post subject: Reply with quote
The only thing I can add is that it's definitely a continental (European) lens (the aperture reads 1:1,9 instead of F/1.9). Could be East German, or even Russian.

Cheers!

Abbazz

Last edited by Abbazz on Sun Mar 30, 2008 12:39 pm; edited 2 times in total


PostPosted: Sun Mar 30, 2008 11:49 am    Post subject: Reply with quote
Sorry, duplicate post -- deleted by Abbazz.


PostPosted: Sun Mar 30, 2008 2:30 pm    Post subject: Reply with quote
I don't think it is a X-Ray lens. They don't have built in apertures, which would not be useful anyway since every photon needs to be catches from that low intensity phosphorus screen. And that is also the reason why it won't be radioactive.

I have several of these lenses myself, but not one looks like that.

Looks more like some avaliable light lens, maybe for an image intensifier.


PostPosted: Sun Mar 30, 2008 2:33 pm    Post subject: Reply with quote
Abbazz wrote:
The only thing I can add is that it's definitely a continental (European) lens (the aperture reads 1:1,9 instead of F/1.9). Could be East German, or even Russian.

Cheers!

Abbazz


Yep, the Komma instad of the Dot is also a dead giveaway!


PostPosted: Sun Mar 30, 2008 4:43 pm    Post subject: Reply with quote
"Aero" lens . May be . The well-known one is the aero Ektar 2,5/178 , this Zeiss is not so far ...
"Process lenses" are generally different , with lower max apertures (F/5,6,f/9 etc ...)


PostPosted: Sun Mar 30, 2008 8:51 pm    Post subject: Reply with quote
Hi Helios,

that would be an idea, need to check on that.

Cheers,


PostPosted: Sun Mar 30, 2008 9:42 pm    Post subject: Reply with quote
Klaus, do you intend to use it, how do you adapt it (thinking of a modern dSLR)?


PostPosted: Sun Mar 30, 2008 11:32 pm    Post subject: Reply with quote
I have done quite a few lens adaptions, so I have some practise, yet haven't found out what that lens would be best for and that influences the mounting quite a bit.

This for instance was shot using an adapted Xray lens...



PostPosted: Sun Mar 30, 2008 11:41 pm    Post subject: Reply with quote
Wow! Klaus!


PostPosted: Mon Mar 31, 2008 12:21 am    Post subject: Reply with quote
Thanks....

so don't tell me that "a little bit of CA" can't be useful... Wink
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