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Topic: FUNGUS : Treat LENSES without disassembly ?!?!
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted November 01, 2016 07:26 AM
I am in touch with a compagny specialised in sterilization for medical equipements.
They can make "hot" or "cold" sterilization.
Abviously, I am interested in the "cold" sterilization process using "Gamma" Rays méthod.
This is the most powerfull method which is supposed to kill ALL virus, bacterias, fungus, breaking their ADN chains in a one shot !!.
They tell me they treat medical lenses too.
There is a high probability this method works for films too, however , to be confirm.
The other question is the price (batch price or price by item, etc....)
Now, we know different processes are possible with different efficiencies and results
To follow
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted November 01, 2016 09:27 AM
Mathew, check the power of the tube and also what kind of UV is produced, I mean UV A, B or C. C rate is the more efficient against bacterias, virus. Anyway , it seems even UV A works, depending on time of exposure.
Dominique, here it is (sorry this is in French Language) :
FUNGUS UV KILLING EXPERIENCE
Dominique, Let me know your feeling about it
I assume there are others TIP for Fungus problem, somewhere.
Paul , "Gamma" Rays is the most sensitive process and can be dangerous for operators. So , at this time , a few compagnies can only do the job in restrictive conditions. But process is going to be developped
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Paul Browning
Phenomenal Film Handler
Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011
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posted November 01, 2016 01:40 PM
Most photo quality lens have some kind of multi coating, but I was under the impression this is to stop flair and stigmatism of the taken picture, maybe it does stop uv light, but why would you have this filter built into some projectors, if only to reflect heat and uv from reaching the film plane. How much uv do you need, more than the sun can provide ???, surely this is the ingress of moisture into the barrel of the lens, and the mould formed from it, but it tends not to grow in scale, you get some, but not more. The heat from the lamp and it cooling down must be perfect a breeding ground for this. I always use de ionised water to clean lens, always have, it does not tend fog up I have found, but of course to get into the lens is best. The uv can stop the advance but does it disappear afterward, subjective.
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