PL or CPL filter?


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giantcanopy

Senior Member
Feb 11, 2007
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SG
#2
;( PL or CPL filter better? and in term of price range? what is their price range>?
Get the circular polarizers instead of the linear ones. Metering and AF can can be unreliable with the older linear polarisers. ( or might not even work )

The linear ones are cheaper.

Ryan
 

giantcanopy

Senior Member
Feb 11, 2007
6,232
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#4
Dunno, I dun ask the local shops for linear ones. Online got some for 10 bucks or less. But my advice is to stay away from linear ones if u got an AF SLR.

For CPL, the price will depend on the brands.

Ryan
 

GavinTing

New Member
Oct 16, 2007
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#5
There are two types of polarizing filters generally available, linear polarizers and circular polarizers (or CPL filters). With the exception of how they interact with some autofocus and metering mechanisms, they have exactly the same effect. Both transmit one of two states of linearly polarized light. The difference is that a circular polarizer alters the light leaving the filter and entering the camera by using a quarter-wave plate to circularly polarize that light. This has the same effect photographically as a linear polarizer, reducing glare in the scene. The metering and auto-focus sensors in certain cameras, including virtually all auto-focus SLRs, will not work properly with linear polarizers because the beam-splitters used to split off the light for focusing and metering are polarization-dependent. Circular polarizers work with all types of cameras, because mirrors and beam-splitters reflect both circular polarizations equally.

-Wikipedia
 

hkingx

Senior Member
Sep 17, 2008
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Singapore. North/East
#6
yup understand. thanks alot.

btw how do u guys keep all the filter when u r taking along with u to outdoor? any small bag out there to protect the filter when outdoor?
 

GavinTing

New Member
Oct 16, 2007
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#7
yup understand. thanks alot.

btw how do u guys keep all the filter when u r taking along with u to outdoor? any small bag out there to protect the filter when outdoor?
Do your filters come with that plastic box thingy with a foam/sponge in it?
 

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