The D300 model incorporates a 12.3 megapixel sensor, the EXPEED image processing system, a 51-point autofocus system with “3D Focus Tracking” technology and two “LiveView” shooting modes that allow you to frame photos using the screen Built-in 3-inch LCD.
The D300 also includes a “Scene Recognition System” that improves autofocus, automatic exposure, and precision in setting white balance. It has a firing time of 0.13 seconds and 45 ms between shots. You can shoot up to eight images per second when using the optional battery; And it can shoot up to 100 images in a row at 12.3 megapixel resolution.
The D300’s “Active D-Lighting” mode provides real-time light and shadow correction with optimized image contrast. It also uses a new Self Cleaning Sensor Unit that vibrates the optical low-pass filter in front of the image sensor.
The camera body is constructed of magnesium alloy and the trigger mechanism lasts for 150,000 cycles. The 3-inch LCD is sealed by tempered glass and the camera uses rubber gaskets to seal the interior from dust particles and moisture.
Both the D300 and the D3 use CompactFlash cards, and both connect to the Mac through the USB 2.0 port.
For professional photographers who require the best image quality, Nikon has introduced the D3. It incorporates a 12.1 megapixel FX-format CMOS sensor that offers a size almost identical to 35mm film. When used in combination with AF-Nikkor lenses, the sensor offers the highest resolution of 12.1 megapixels with up to nine images per second.
When used with DX Nikor lenses, the D3 automatically switches to DX-format mode, using a cropped portion of the sensor to generate images at 5.1 megapixel resolution, and masking the portion of the viewfinder that will not be photographed, to magnify thus the speed up to 11 images per second.
It also uses the Expeed Image Processing System used by the D300 and has an ISO range of 100 to 25,600, with a normal ISO range of 200 to 6,400. The D3 features a 51-point autofocus system using 3D Focus Tracking and LiveView modes, as well as the Scene Recognition System.
The time between shots is 37 ms and the ignition time is 0.12 seconds. You can shoot up to 64 consecutive images in JPEG format, with Normal compression, or 20 or 17 images in NEF (RAW) format, depending on whether it is set to 12 or 14 bit.
The D3 is also constructed of magnesium alloy and the firing mechanism is tested for a 300,000 pulse cycle. The built-in LCD screen is 3 inches.