2x is one stop. 4x is two stops. 8x is three stops. 16x is four
stops... 64x is six stops.
I have three glass ND filters. One labeled .6 and 4x, one labeled 1.2
and 16x, and one labeled 1.8 and 64x.
That's the way it is. It is very simple.
Don't be confused.
Jim
At 09:18 PM 9/30/2006 -0500, Shannon Stoney wrote:
!!!! This is very confusing. Why do they call the filter factor 2 if it's really 1.4?
--shannon
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