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Voigtlander-Braunschweig Anastigmat Skopar 105mm f4.5
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PostPosted: Fri Jul 22, 2011 10:25 pm    Post subject: Voigtlander-Braunschweig Anastigmat Skopar 105mm f4.5 Reply with quote
Salvage lens from broken/junk folder.
Image of lens after cleaning .




Images taken on a Sony APSC DSLR all wide open @f4.5.






Thank you and any C&C is welcome.


PostPosted: Sat Jul 23, 2011 1:05 am    Post subject: Reply with quote
Do you know what folder that came from ?

It looks like a unit focusing type (not front cell focusing).

I am wondering if there is a problem with internal haze on that. Old lenses often have contrast problems, but I would expect quite good contrast from a Skopar, as it is a Tessar formula.

If it is a front cell focus type you can play with making your own soft focus effects !


PostPosted: Sat Jul 23, 2011 1:24 am    Post subject: Reply with quote
Luis,
Hi!It is a front cell focusing type. There was was fungus in this lens , I managed to get a lot of it out-but not all .They are living in the front cell between the elements-and looks like too risky to take it apart,to clean it. Do you have any experience taking front cell apart-I'd love to hear.

It came off a Voigtlander Bessa maybe?-took 120 film-I chucked the folder the minute I got shutter and lens off.

Cheers,

Its the lens to your right.


PostPosted: Sat Jul 23, 2011 4:45 am    Post subject: Reply with quote
The haze inside the front cell is typical for old Tessars.

I have fixed the haze problem on a couple of Skopars, of the unit design, and a front cell focus type on a Brillant.

On the fixed Skopars you have to unscrew the name ring using a friction tool and remove the front element, which is loose.

If I recall correctly this was unnecessary on the one on the Brillant. You have to remove the name ring by unscrewing the two tiny screws, and I believe there was a notched ring behind that to release the front element.

Unfortunately I left the Brillant at work and I cant check.

The old Tessars are better, as there is usually a knurled ring on the back of the front cell that allows you to separate it into two mounted elements.


PostPosted: Sat Jul 23, 2011 4:55 am    Post subject: Reply with quote
luisalegria wrote:
The haze inside the front cell is typical for old Tessars.

I have fixed the haze problem on a couple of Skopars, of the unit design, and a front cell focus type on a Brillant.

On the fixed Skopars you have to unscrew the name ring using a friction tool and remove the front element, which is loose.

If I recall correctly this was unnecessary on the one on the Brillant. You have to remove the name ring by unscrewing the two tiny screws, and I believe there was a notched ring behind that to release the front element.

Unfortunately I left the Brillant at work and I cant check.

The old Tessars are better, as there is usually a knurled ring on the back of the front cell that allows you to separate it into two mounted elements.


Thank you Luis for following through. I feel I can open it now, to clean between the front elements. I did remove the front cell by way of removing the two screws you talk of, when I initially cleaned it.
As you suggest I should be able to to use a friction tool without removing the 2 screws and address the element in that fashion. I should have thought of that- I feel more reassured about tackling this now.
I walked down to the waterfront and took some pictures as it was sunny-and the haze was more prominent.

Thanks again

Adios


PostPosted: Sat Jul 23, 2011 6:30 pm    Post subject: Reply with quote
I have posted this lens in the repair sectiion Very Happy
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