Hi Bob

-> > B > Anyone tried using a circular pola filter for a neutral density
-> effect?
-> >
-> > I've heard of crossed polarised filters being used as
-> > infinitely-variable density neutral filters.
-> > But they were not cheap...

Two of them could be used to cancel each other.
If your using that Nikon with the 28mm filter
threads, Nikon has a nice kit at the camera store
containing a polarizer, a UV filter, an ND 4 
and an ND 8 for around sixty-seventy bucks or so. 
A nice little pouch and the slot for the the paper
work is nice for holding a 28 to 37mm adapter ring.

Bobfer
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