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Archive 2011 · cleaning oil off lens glass
  
 
sebboh
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p.1 #1 · cleaning oil off lens glass


does anyone have recommendations for what to use to clean oil of internal lens elements?


Dec 11, 2011 at 06:52 PM
helimat
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p.1 #2 · cleaning oil off lens glass


I have used my mix of isopropyl and distilled water in the past with pretty good success. It dries fairly quickly and leaves little in the way of streaks, a quick polish afterwards is all's that is needed.


Dec 11, 2011 at 07:08 PM
jcolwell
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p.1 #3 · cleaning oil off lens glass


Get some ROR (Residual Oil Remover).


Dec 11, 2011 at 07:31 PM
sebboh
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p.1 #4 · cleaning oil off lens glass


thanks guys. a friend gave me a tamron 90/2.5 52B macro a while back and i thought it just had some weird blue hazing or fungus along with the oily blades. i finally got around to disassembling it though and the glass is perfect, just covered in oil on all of the elements in front of the aperture!


Dec 11, 2011 at 08:39 PM
Ataboy
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p.1 #5 · cleaning oil off lens glass


ROR to start with, then high quality acetone for the final touch (just make sure it does not contact paint around). If you think there may be fungus, use "Purosol Optical" instead of ROR and let it stay on the glass for few minutes (it will eat fungus with its ferment cocktail).


Dec 12, 2011 at 02:33 AM
sebboh
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p.1 #6 · cleaning oil off lens glass


Ataboy wrote:
ROR to start with, then high quality acetone for the final touch (just make sure it does not contact paint around). If you think there may be fungus, use "Purosol Optical" instead of ROR and let it stay on the glass for few minutes (it will eat fungus with its ferment cocktail).


how do you apply the acetone? do you have to be quick to avoid coating damage?



Dec 12, 2011 at 03:39 AM
 

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helimat
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p.1 #7 · cleaning oil off lens glass


I wouldn't have the balls to use acetone on an element myself.


Dec 12, 2011 at 04:32 AM
LightShow
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p.1 #8 · cleaning oil off lens glass


Wash with water and a bit of dish soap to cut the oil, dry, then eclipse/ror/iso.

I would use caution on any bonded elements.



Dec 12, 2011 at 06:19 AM
Daniel Heineck
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p.1 #9 · cleaning oil off lens glass


LightShow wrote:
Wash with water and a bit of dish soap to cut the oil, dry, then eclipse/ror/iso.

I would use caution on any bonded elements.


This. Wash your hands first (to make them soft) and then just use your fingers. No joke.

Acetone would be the last thing I'd use. If anything... methanol then isopropanol.

No ultrapure water either, but regular distilled might not be bad. (as in no 18 MΩ DI)



Dec 12, 2011 at 06:45 AM
kosmoskatten
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p.1 #10 · cleaning oil off lens glass


Wipe, ror/iso as needed, repeat if necessary, skip the acetone. Even though acetone is a good degreaser, possibly the best, and leaves no residue I don't know if it could adversely affect coatings.


Dec 12, 2011 at 08:10 AM
Bifurcator
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p.1 #11 · cleaning oil off lens glass


It can affect the cement used in doublets for sure. Definitely skip the acetone - it has no place at all around lenses.




Dec 12, 2011 at 11:20 PM





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