The Nikon D3S is an incredibly fast performer. It needs only 0.3 second from power on to the first shot, and only 0.35 second between shots. Speaking of its shutter lag, it is so fast that it can be considered non-existent. Thanks to its 9 frames per second continuous shooting speed in FX (full-frame) mode, the D3S is not only a low-light king but also a speed king. You can get a higher continuous shooting speed of 11 frames per second if you use the DX (1.5x crop) mode, in which the resolution will be reduced to 5.1 megapixels.
The D3S comes with a doubled buffer memory, so you can now shoot up to 40 RAW images with maximum continuous shooting speed. Previously, this is only possible when using an additional buffer memory expansion. Last but not least, the powerful EN-EL4a Lithium-ion rechargeable battery can now withstand 4200 frames on a single charge. Overall, the D3S is the best Nikon camera in terms of responsiveness and operational speed. If you are a sports photographer, you might want to invest in a UDMA-enabled CompactFlash card in order to get the best performance out of this camera.
The main strength of the Nikon D3S is its image quality in high sensitivity settings. When it comes to low-light photography, the D3S is not only the best Nikon camera but also the best camera worldwide, currently unmatched by any other digital camera by the time of this writing. Offering a sensitivity range of ISO 200 – 12,800, and expandable up to ISO 102,400, the D3S really sets a new standard in non-flash photography. Images taken by the D3S at low sensitivities are of very high quality with accurate and vibrant colors, and the D3S is capable of keeping colors accurate as the sensitivity level increases. Moreover, the D3S’s capability in shooting videos at high sensitivity settings up to ISO 120,400 is also something that you won’t find on any other digital SLR camera.