Angenieux F. 16-44mm T 1,3 repairable??!!

[Jonas Roemmig]

Hello,

 

I`m living and working as freelanced dop in germany. Now i bought this zoom lens via the www in the states...

It`s an Angenieux F. 16-44mm T1,3 ( Type 2.6 x 16 B ).

When i got it, i had to determine that it has a deep scratch close to the middle of the front lens (not only the blooming). With higher apertures and direct sunlight it affects the image in a way which makes it impossible to work with (not only because the front lens circulates when pulling the focus).

I already contacted different specialists who couldn`t help me and the guys from angenieux told me that back in the days when the lens was built they used a special kind of glass, which even makes reproduction impossible.

 

 

Does anyone of you has such a lens as replacement, or an advice what to do, maybe a contact or anything that helps me getting out of this tricky situation (ideally without paying more than i did for the lens!?)?

 

Thanks a lot!

 

Jonas

Edited July 18, 2013 by Jonas Roemmig

[Robert Rif]

You can use matte black paint and paint out the scratch.

 

See here;

http://photo.net/bboard/q-and-a-fetch-msg?topic_id=23&msg_id=0016zA

and here

http://photo.net/canon-eos-digital-camera-forum/00J4Zh

[Dom Jaeger]

Yes using matte black paint or lacquer is a good trick for stopping a deep scratch or chip from refracting light into the lens. It works better for longer focal length lenses though. With short focal lengths at deeper stops and closer focus the front element surface becomes visible and you can see the black mark. It depends on the size of the scratch but at a focal length of 16mm you'd probably start to see a shadow stopped down past f/4 or 5.6 even at infinity. More forgiving at 44mm, where you'd likely be safe anywhere up to around f/11. So definitely worth a try.

 

Aside from finding another junker lens with an undamaged front element that you can swap over, the only other possibility is to have the scratch polished out and then the element re-coated. But the scratch can't be too deep into the glass, and at many hundreds of dollars the cost is probably not worth it.

 

If you do find a replacement front element I would recommend having a lens technician do the fitting, the lens will probably need some adjustment.

[Jonas Roemmig]

hello & thanks for the detailed infos!!!

 

what paint would be the best?

two options that i found so far:

 

1. http://www.hyatts.com/art/montana-acrylic-paint-marker-0-7mm-black-N48220

 

2.http://www.ebay.com/itm/Badger-16-119-Flat-Black-MODELflex-Model-Flex-Acrylic-Water-Based-Paint-1-oz-/170896153638

 

... or none of them?

 

thanks again,

 

best,

jonas

Edited July 25, 2013 by Jonas Roemmig

[Robert Rif]

Why not try some water based ink first, that is easily removed if it turns out that it doesn't work on your lens, i.e. it becomes visible.

 

I think you can use anything from a permanent marker pen to Humbrol paint when you want it to be permanent; http://www.dpreview.com/forums/post/51560863

Edited July 25, 2013 by Robert Rif