From what I've read I believe it takes 2 exposures, 2 stops apart, in one raising of the mirror, then combines them into one JPEG. I don't know if there's an option to retain the 2 raw files if shooting in raw mode, but HDR output is jpeg only. This IMO makes it really an enthusiast and not a professional feature (maybe they're playing to KR directly?)

I wish Nikon would add a feature that shoots an entire exposure bracket (with adjustable exposure increments past 1 stop) without unnecessarily slapping the mirror around. Bracketing for HDR I don't want to re-adjust AF and I don't want to re-adjust meter reading, so no need to drop the mirror. Olympus had this right years ago. Nikon is still thinking in terms of traditional exposure bracketing for film and not really in tune with what people are doing these days regarding this feature.

Larry - a Bay Area Nikonian
My Nikonians gallery

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