Nikon D3s Main Features:

ISO performance: ISO 12800 as standard, expandable to ISO equivalent of 102400 (Hi 3)
Nikon FX-format CMOS image sensor with 12.1 effective megapixels
Improved D-Movie function including High-Sensitivity Movie mode and flicker reduction function
Nikon’s Integrated Dust Reduction System including Image Sensor Cleaning function
Incorporates Nikon’s original EXPEED digital image processing
Active D-Lighting with bracketing for up to 5 frames
Picture Control: Standard, Vivid, Neutral and Monochrome (Landscape and Portrait can be downloaded from Nikon website)
Quick response with approx. 0.12 seconds start-up time and approx. 0.04 seconds shutter-release time lag
9-frames-per-second shooting rate in FX format, 11 fps in DX crop (CIPA Guidelines)
Nikon’s original Scene Recognition System, utilizing 1,005-pixel RGB sensor, for more accurate autofocus, auto exposure, i-TTL flash control and auto white balance
Multi-CAM 3500FX AF sensor module featuring 51 AF points
Viewfinder with approx. 100% frame coverage and approx. 0.7x magnification in FX format
Durable shutter unit proven by 300,000 cycles of testing on fully assembled camera
Intelligent power management that lets you shoot up to approx. 4,200 frames per charge (based on CIPA Standards)
Easy-to-access Live View modes with dedicated button
Quiet Shutter-release mode for nonintrusive shooting
High-definition (approx. 921k-dot), 170˚ viewing angle, 3-in. VGA LCD monitor with tempered glass

Medium-telephoto 85mm Micro lens (picture angle is equivalent to a focal length of 127.5mm in FX/35mm format)
Closest focusing distance of 0.286 m/0.9 ft. (1:1 life size)
The optical system featuring an ED (Extra-low Dispersion) glass element is optimized for DX-format digital SLRs
Vibration Reduction (VR II) enables sharper pictures while shooting at shutter speeds up to four stops slower than would otherwise be possible
Silent Wave Motor (SWM) ensures fast, quiet AF operation
Two focus modes available — M/A and M
IF (Internal Focusing) enables focusing without changing the length of lens barrel
The nine-blade rounded diaphragm opening gives out-of-focus elements a more natural appearance