Digital Rev has posted an article entitled "The Nikon D400 & Nikon D750 Revealed or Just Viral Marketing?" suggesting images and specs for the a Nikon D400 and Nikon D750. They cite no source for the information, which presents a third option: pure fiction designed to generate hits.
If real, they are claiming 16-18 Megapixel FX sensor, ISO 25,600, 1080p stereo video (possibly with autofocus).
Source: Digital Rev on 4/18/2009.
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