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Cine lens servicing.


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#1 Eric Hurt

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Posted 20 October 2010 - 05:58 PM

Does anyone have any suggestions on a good place / person to have service glass? Ultra primes and Cookes...
Thanks!
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#2 Tom Jensen

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Posted 21 October 2010 - 03:21 AM

Where are you and what's wrong with your lenses?
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#3 Eric Hurt

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Posted 21 October 2010 - 05:02 PM

Where are you and what's wrong with your lenses?


LA, mold on inside of barrel. I'd rather give the work to an individual so I could sit in and watch the process...
Thanks!
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#4 Dom Jaeger

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Posted 21 October 2010 - 07:51 PM

LA, mold on inside of barrel. I'd rather give the work to an individual so I could sit in and watch the process...
Thanks!


Mold on the inside of the barrel?

Fungus attacks the surface coating of the elements, or the canada balsam cementing a doublet in older lenses. I've never heard of it on a lens barrel.

What you might be seeing is white speckling around the edges caused by the refracted image of an element's black edge coating that has degraded.

To replace the edge coating on high-end lenses like Cookes and Ultra Primes is a job I would personally leave to the manufacturers. But certainly take them to a respected lens repair house to properly diagnose the problem.

Regarding sitting in on a lens tech to watch their work, I doubt many techs would be happy to do this. Not because it's a secret business or anything, but simply because it is distracting to have someone look over your shoulder while you do very delicate work. As a comparison, would you allow somebody to follow you around on set asking questions while you shot a film, simply because they were curious how it all worked?
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#5 Tom Jensen

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Posted 21 October 2010 - 07:58 PM

I'd be glad to discuss it with you. Check your pm's and call me.
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#6 Eric Hurt

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Posted 26 October 2010 - 07:22 AM

Thanks for the help. And as far as "As a comparison, would you allow somebody to follow you around on set asking questions while you shot a film, simply because they were curious how it all worked? I actually do this fairly often.
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#7 Dom Jaeger

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Posted 26 October 2010 - 08:37 AM

Fair enough. Good on you for being so generous. I'm happy to take people into my projection room or spend some time explaining how something works, I just don't like an audience while I work. Probably just me, I'm grumpy til the third coffee. <_< Apologies if you took offence, none was intended.
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#8 Tom Jensen

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Posted 26 October 2010 - 09:24 AM

Fair enough. Good on you for being so generous. I'm happy to take people into my projection room or spend some time explaining how something works, I just don't like an audience while I work. Probably just me, I'm grumpy til the third coffee. <_< Apologies if you took offence, none was intended.


I need the money. :lol:

Edited by Tom Jensen, 26 October 2010 - 09:25 AM.

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Tai Audio

Abel Cine

Wooden Camera

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Aerial Filmworks