Select Nikon D-SLRs feature a Multi-area crop mode for movies. This includes FX format, DX format, and a specific 1920x1080 crop mode. The latter of these modes provides a unique 2.7x crop factor by cropping the center of the image sensor to exactly 1920 x 1080 pixels. All three crop modes produce the same resulting 1080p movie files. These modes provide unparralleled versatility to any collection of NIKKOR lenses by offering a multitude of cropping options to fit almost any shooting situation and all provide the same high quality 1080p output movie file.nikongrossary
Multi-Area AF-Assist Illuminator, built-in to select Speedlights, can be used with all focus-areas of cameras compatible with the Nikon Creative Lighting System to give you autofocus shooting capability in extremely dim lighting.If light in a scene is so low that the camera s AF system cannot see the subject, and thus cannot focus on it, turning on the Speedlight s AF Assist Illuminator will project a patterned beam of light on the subject; the AF system can then achieve autofocus by focusing on that pattern.