HELP! Water mark inside B+W CPL Filter


KhimKim84

New Member
Nov 28, 2011
3
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0
#1
Hi all,

I was shooting with my cpl filter on my lens and rain suddenly come down. Water seep in between the glass and now the cpl filter has water mark inside after it become dry. I tried to use some micro fabric and lens pen to clean but cannot remove. Any idea how to remove these water marks? A lot of them, some small some big.

Any people has water mark inside before? It look like its at the back of the front rotating lens. Thanks.
 

daredevil123

Moderator
Staff member
Oct 25, 2005
21,645
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lil red dot
#2
Hi all,

I was shooting with my cpl filter on my lens and rain suddenly come down. Water seep in between the glass and now the cpl filter has water mark inside after it become dry. I tried to use some micro fabric and lens pen to clean but cannot remove. Any idea how to remove these water marks? A lot of them, some small some big.

Any people has water mark inside before? It look like its at the back of the front rotating lens. Thanks.
Are there really 2 pieces of glass in a CPL?

Just continue using the filter, the water mark do not affect image quality too much. If you are so bothered by it, you can buy a new CPL.
 

bonrya

Senior Member
Dec 16, 2010
2,632
3
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In a mobile cage
#3
Put inside the dry cupboard in a tub of rice with a thirsty hippo inside. Hopefully the water will be 'sucked' out. :sweatsm: :thumbsup:
 

daredevil123

Moderator
Staff member
Oct 25, 2005
21,645
63
48
lil red dot
#4
Put inside the dry cupboard in a tub of rice with a thirsty hippo inside. Hopefully the water will be 'sucked' out. :sweatsm: :thumbsup:
eh bonnie, TS say water dry liao.. it is the water marks.
 

rhino123

Moderator
Staff member
Sep 1, 2006
5,243
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NA
#5
Use a lens wench to take off the glass, clean the glass with a piece of anti-static cloth, then resemble the filter back.
 

bonrya

Senior Member
Dec 16, 2010
2,632
3
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In a mobile cage
#6
daredevil123 said:
eh bonnie, TS say water dry liao.. it is the water marks.
Soak in water before going through treatment again? Hehe ok la paiseh read wrong. :embrass:
 

KhimKim84

New Member
Nov 28, 2011
3
0
0
#8
Hi Daredevil, just tried shooting with the CPL, cannot see any water mark in the photo I took. I am too new to differentiate any contrast drop or polarising properties decreasing or affected or not... Mostly use it to cut the reflection from glass window or water surface.

Hi Bonrya, thanks for suggesting, now the CPL is inside dry cabinet, try for few days first. Not sure if the water is dried or not actually. The filter is B+W Kaesamann CPL, suppose to have some protection for moisture entering to the CPL according to B+W website hmmm... Don't know how it get in in the first place, maybe get in easy, get out hard lol.

I not really sure its 2 piece of glass or not either, very new to DSLR. I assume because can turn, so should be 2 piece of glass?

Hi Rhino, lens wench can do? Easy to assemble back?
 

edutilos-

Senior Member
Dec 28, 2010
6,032
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The Universe
www.facebook.com
#11
A "circular polarizer" actually consists of two elements. The first is a linear polarizer, exactly the same thing as the linear polarizer we have just discussed. The second. element is called a quarter wave plate and it is cemented to the back of the linear polarizer with a specific orientation such that the light emerging from the quarter wave plate is circularly polarized (hence the "circular" polarizer name). How it does this is beyond the scope of this article, but take it from me, it does!
All about Polarizers - Linear and Circular
 

takafan

Senior Member
Nov 26, 2008
1,000
6
38
Bedok
#12
I have had the same cpl before. You might have to use a little more strength on it than usual, with a micro fibre cloth. That's what I do. It will go away.
 

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