The ND filter doesn't change anything - it's the longer shutter time that
makes water smooth/creamy. (A polarizer will remove about 1.5 stops but
will also polarize! - it can make the water disappear - by eliminating /
reducing reflections - so it's not a direct replacement).
So you can use the ND filter anytime you want slower shutter speed (to
exaggerate motion blur) or to be able to increase the aperture (less DOF).
1.5 stops is rarely enough - an ND filter will probably start at 3 stops to
really show effect.
Jez
On Jan 22, 2008 2:26 PM, Ali Shah <alizookoman@xxxxxxxxx> wrote:
>
> What can I use a ND Filter for besides making water
> look smooth/creamy!?? Can a polarizer take place of a
> ND filter or vice versa?
>
> Thanks.
>
>
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