Quote Originally Posted by Dave Miller
It seems to me that it is the opposite of dealing with deep shadows. So metering off the snow, and closing down two stops ought to get you into the right area.

I'm assuming that you plan to use monochrome, colour stock is more demanding of acurate exposure, as I'm sure you know.
Closing down two stops will put the snow around zone III. You should open up three stops for zone VIII snow.