The Nikon D600 has a lot going for it if you are in the market for a DSLR that lies between a consumer level one (such as the D3100) and the Pro level D800 or D4. Also, if you are stepping up from a compact camera and wish to get serious about your photography and can afford it then it probably makes a better buy that say, the D3200, though I recommend looking at the D7000 as well.
Specification-wise it offers:
24.3-megapixel FX-format (full-frame) CMOS sensor with excellent signal-to-noise ratio and wide dynamic range. Delivers richly detailed images with smooth tonal gradations.
Highly sensitive autofocus with Multi-CAM4800 39-point AF system: delivers fast and precise coverage across the frame. Sensitive down to -1 EV and compatible up to f/8.
ISO 100–6400: extendable up to 25,600 (equivalent) and down to 50 (equivalent). Enables faster shutter speeds for finely detailed images with minimal noise.
Multi-area D-Movie records FX- and DX-format Full HD (1080p) movies in 30p, 25p and 24p. Max recording time approx. 29 minutes 59 seconds. Offers uncompressed HDMI output to external devices and high-fidelity audio control.
EXPEED 3 image processing engine with 14-bit A/D conversion and 16-bit image processing for superb tonal gradation.
HDR (High Dynamic Range): ideal for high-contrast scenes. Takes two shots within a single shutter release to create an image with an extremely wide dynamic range, low noise and rich color gradation.
Active D-Lighting: capture more detail in high-contrast lighting conditions. Nikon’s Active D-Lighting automatically retains the details in both dark and bright areas for stunning images with natural contrast.
Scene Recognition System: the camera’s image sensor and its 2,016-pixel RGB sensor provide precise data to the Scene Recognition System, which optimizes exposure, autofocus and white balance immediately before the shutter is released for sharply defined images.
Time-lapse shooting: use Interval Timer Shooting to trigger the shutter at preset intervals. Use Time Lapse Photography to save images as movie files and view slow action in fast playback, with playback rates from 24 to 36,000 times faster than normal.
Picture Controls customize the look of your stills and videos by fine-tuning parameters such as sharpness, saturation, and hue before capture.
Precision 8-cm (3.2-in.), 921k-dot, VGA LCD monitor with automatic monitor brightness control. Delivers bright, crisp image playback with a wide color reproduction capacity.
High-performance viewfinder with approx. 100% frame coverage and 0.7x magnification. Offers DX Crop Mode with viewfinder marking.
5.5 fps continuous shooting: capture fast-moving action at five-and-a-half frames per second.
Quiet shooting mode: perfect for discreet photography, the sound of the camera’s mirror return mechanism is noticeably reduced.
Mirror balancer: minimizes the bounce of the mirror’s down movement, extending viewing time and allowing more time for AF operation—one reason the D600 achieves AF and focus tracking even during high-speed continuous shooting.
Compact, light and durable: built to withstand severe conditions, the camera boasts magnesium alloy top and rear covers and weighs only 760 g (without battery). Weather-sealed to the same degree as Nikon’s professional D800 SLR, it offers enhanced resistance to moisture and dust.
Dual-axis electronic virtual horizon: you can confirm the camera's position relative to the horizontal plane and its pitch (forward or rear rotation) using the LCD monitor, or the viewfinder.
Twin SD card slots: two SD memory card slots offer enhanced shooting flexibility. Use the second card when the first is full, or record stills on one and movies on another. SDXC and UHS-I compatible.
Wireless transfer: Nikon’s optional WU-1b Mobile Adapter lets you share images directly from the D600 to a smartphone or tablet, or to control the camera remotely via your smart device*.
* Compatible with smart devices using Android OS. Compatibility with iOS will be available from fall, 2012. A Wireless Mobile Adapter Utility must be installed on the smart device prior to use. This utility can be downloaded from Google Play™ at no charge.