High-density 51-point autofocus system for fast, precise lock on subjects

The D300 is equipped with Nikon's newly developed Multi-CAM 3500DX autofocus module, which features the world's largest number^*1 of focus points. The system selects the focus point that best applies to the subject, demonstrating an outstanding level of precision, even when shooting in constantly changing conditions. All 51 focus points, including the array of 15 cross-type sensors located in the center, maximize the potential of lenses with maximum apertures of f/5.6^*2. Working in tandem with the new Scene Recognition System and the information it computes from the 1,005-segment RGB sensor, this system exhibits superior ability to lock onto your subject, and to predict the subject's movement. The result is more precise autofocus performance. The system also offers the ability to switch from 51 focus points to an 11 focus point mode.

*1 Among digital SLR cameras as of August 23, 2007 (according to research conducted by NIKON CORPORATION).
*2 Depending upon the shooting conditions, some lens + teleconverter pairs will limit the function of the upper and lower three cross-type sensors to line sensor operation, even if the combined theoretical aperture is f/5.6.