Fitting into Nikon’s lineup between the D5000 and D3000, the new D3100 tops them both in a number of areas, including pixel count (14.2 MP vs. 12.3 for the D5000 and 10.2 for the D3000) and full 1080p HD video with full-time autofocusing during recording. Like the D3000 and D5000, the D3100 doesn’t have a built-in AF motor, so the camera will provide auto focusing only with lenses that have the motor built in—primarily, the AF-S Nikkors, including the new low-priced AF-S 55-300mm zoom that was introduced with the camera.
For outdoor shooters who want to record the location in the metadata for each image, the D3100 offers a socket that accepts the cord from the optional Nikon GP1 GPS unit or the cord for the MC-DC2 remote control.
Automatic Chromatic-Aberration Correction
Higher-end Nikon bodies have provided automatic correction of chromatic aberration for a while, but now this very useful feature comes to an entry-level model. No more purple/green fringing; the camera automatically corrects it as you shoot.
Image Sensor: 14.2-megapixel (effective) CMOS
Resolution: 4608x3072 pixels
Sensor Size: 23.1x15.4mm (APS-C); 1.5x
LCD Monitor: 3.0-inch, 230,000-dot Live View
Video: 1920x1080/24p full HD, 1280x720/30p (also 25p and 24p) HD, plus 640x424/24p
AF System: 11-point
Shutter Speeds: 1/4000 to 30 sec., X-sync up to 1⁄200 sec.
ISO Settings: 100-3200 (1⁄3 increments), expandable to 6400 and 12,800
Continuous Firing Mode: 3 fps
Recording Format: JPEG, NEF (RAW), NEF + JPEG
Metering: 420-pixel RGB evaluative, CW, 2.5% spot
Storage Media: SD/SDHC/SDXC
Dimensions: 4.9x3.8x2.9 inches
Weight: 16 ounces
Power Source: Rechargeable EN-EL14 Li-Ion battery
Estimated Street Price: $699 (with 18-55mm VR zoom)
Contact: Nikon, (800) NIKON-US, www.nikonusa.com