grad ND filter VS Circular Polariser


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XC Pictorial

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Apr 29, 2006
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#3
Mainly Neutral Density filter only reduces the overall exposure. Whereas a CPL actually polarises, meaning only allow light in certain planes to pass through. I prefer a CPL because rotating before taking a picture produces interesting effects. ;)

xc
 

Denosha

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Dec 25, 2003
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#4
yumyum asked about the grad ND filter not the normal type. Anyway, the link posted by yyD70s is a good read.

Here's a practical example of how it's used (Cokin grad grey ND8):



Without the filter, there won't be the blue gradient in the sky. In fact, the sky would likely be blown out white/grey.
 

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