Nikon D5100

The Nikon D5100 is a 16.2-megapixel DX-format DSLR F-mount camera announced by Nikon on April 5, 2011. It features the same 16.2-megapixel CMOS sensor as the D7000 with 14-bit depth, while delivering Full HD 1080p video mode at either 24, 25 or 30fps. The D5100 is the first Nikon DSLR to offer 1080p video at a choice of frame rates; previous Nikon DSLRs that recorded 1080p only did so at 24 fps. It replaced the D5000 and was replaced by the D5200.
Feature list.
The D5100 has no in-body autofocus motor, and fully automatic autofocus requires one of the currently 162 lenses with an integrated autofocus motor. With any other lenses the camera's electronic rangefinder (which indicates if the subject inside the selected focus point is in focus or not) can be used to manually adjust focus.
It can mount unmodified A-lenses (also called Non-AI, Pre-AI or F-type) with support of the electronic rangefinder and without metering.
Optional accessories.
The Nikon D5100 has available accessories such as:
Reception.
Independent reviews and image comparisons at all ISO speeds in JPEG and RAW (with different lenses) are available.
DxO Labs awarded its sensor an overall score of 80.
Filming.
Nikon France used the D5100 for the production of the short film "Fragments".
Nikon used the D5100 to film one of the television commercials for the camera itself, which feature actor and perennial Nikon pitchman Ashton Kutcher.