D3100's precision high-speed autofocus responds immediately to changes in scene or composition, maintaining tack-sharp focus to capture fleeting expressions and fast-moving sports. The all-important central focus point features a cross-type sensor while the new superimposed display achieves a clear, uncluttered viewfinder. Various autofocus modes cover nearly any situation, including auto-area AF that automatically selects the subject on which to focus, and 3D-tracking (11 points)* that maintains focus on a subject regardless of changes in composition as long as the shutter-release button is pressed halfway.
* When autofocus is set to AF-A or AF-C.
3D-tracking (11 points)
The Improved Scene Recognition system offers outstanding auto white balance performance that nearly rivals the precision of the D3s, Nikon's flagship camera. White is reproduced more faithfully while maintaining stable color balance regardless of light source.
- When the light gets low or you find yourself shooting in tricky backlit lighting, use the built-in pop-up flash to brighten the scene. It activates automatically when needed depending on exposure mode*, or can be enabled manually. In addition, support for i-TTL flash control increases exposure accuracy.
* When Scene Mode is set to Auto, Portrait, Child, Close-up or Night portrait
- Nikon's exclusive Scene Recognition System utilizes a 420-pixel RGB sensor to analyze a composition immediately before you take the shot. It then automatically optimizes exposure, autofocus, and white balance, allowing you to obtain beautiful photos without the hassle of making complicated camera adjustments yourself. Face detection also benefits from Scene Recognition System, exhibiting improved recognition accuracy and definition as well as enabling instant zoom-to-face in playback mode.