The D3S is uniquely qualified to meet the changing needs of photographers whose assignments demand 100% from them and their equipment. Leading with uncompromising FX-format multimedia versatility and engineered for demanding professional use at up to 9 fps, the D3S' rugged magnesium alloy construction, comprehensively sealed against dust and moisture, delivers on its promises of superiority. Exacting moments in time are captured to an expanded buffer, allowing continuous capture of up to 82 JPEG (fine) or 36 14-bit NEF (RAW) images. Nikon's newly engineered, original 12.1-megapixel CMOS sensor, teamed with exclusive technologies such as EXPEED image processing, Nikon's Scene Recognition System and a fast, accurate 51-area AF system, work together to assure that both still and smooth 24 fps HD video files exhibit incredible edge-to-edge sharpness, rich color depth and broad tonal range, while barrier-breaking performance enables low-noise ISO sensitivity to 12,800. Expanded ISO sensitivities of 25,600, 51,200 and an astounding 102,400, shatter many long-standing rules of photography. Audio to accompany HD video is preserved with a built-in microphone, while high fidelity stereo sound is recorded through the external Mic input using an optional microphone. More proven technologies include Nikon's renowned 1,005-pixel RGB 3D Color Matrix Metering II, assuring exacting exposure evaluation and white balance detection. Precise image review and menu access comes to life with the D3S' tempered glass-protected and individually factory-calibrated 3-inch, 921,000-dot Live View monitor. A self-diagnostic shutter, tested to beyond 300,000 cycles, and a myriad of inherent benefits stemming from decades of Nikon design experience, round out the D3S' qualifications to meet the needs of professional photographers. ..