Cleaning CPL


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st0pandst4re

Senior Member
Feb 23, 2009
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#1
hi guys i got a B+W CPL filter..

decided to clean it with a normal camera lens cleaning cloth due to water marks (i have no idea why) on it.

However after i cleaned it my cloth became black... is it because of the dirt? or are we not supposed to clean them due to the tinting of the lens etc?
 

Snoweagle

Senior Member
Jan 26, 2005
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Pasir Ris, Singapore
#2
hi guys i got a B+W CPL filter..

decided to clean it with a normal camera lens cleaning cloth due to water marks (i have no idea why) on it.

However after i cleaned it my cloth became black... is it because of the dirt? or are we not supposed to clean them due to the tinting of the lens etc?
For CPL, never clean the rear part as that's the coating for the CPL and cleaning it will wear off the coating and render the polarising effect useless over time. If u want to clean, only clean the exterior surface.
 

melvyn83

New Member
Jun 30, 2008
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#3
Snoweagle , can it be used with lens tissue and cleaning liquid solution and will the coating will come off or not.
 

HHenrYY

New Member
Mar 18, 2009
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Singapore
#5
so meaning only the front part, exterior , can be cleaned.

but how did u get the interior watermarked ?
 

B-setting

Senior Member
Jul 16, 2004
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#8
the water at the back part of the CPL could be due to condensation? :dunno:
 

Snoweagle

Senior Member
Jan 26, 2005
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Pasir Ris, Singapore
#9
I think he is trying to say that he has stained the back of his CPL. there is some water stain... how to get rid of them? i'm curious to find out too :bsmilie:
The only way is to gently wipe it off, no choice if u want to get it out. But the coating's not until so 'fragile' but prolonged cleaning of that area over time will wear out the polarizing coating.
 

st0pandst4re

Senior Member
Feb 23, 2009
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#10
hey guys thanks for the help!
i've no idea whether it was the coating that came off!
but anyhow the mark is gone!

shall take note and not clean anywhere but the exterior side of the lens! thanks =)
 

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