The Canon 1DX is a professional level camera with pro level features to match. It has a magnesium alloy, weather sealed body (featuring a vertical grip with an additional shutter button) that houses an 18MP full-frame CMOS sensor. The viewfinder is large and provides a 61 point autofocus system which is great for capturing action. Another great feature for action shooting is the staggering 12 fps burst rate that this camera is capable of. On the back there is a 3.2'' 1,040,00 dot screen on the back, which is more than enough for looking at previous pictures as well as navigating through menus. It also features two CF card slots for extra storage while on the job. This camera is great at all types of photography, but espeically studio and action work. It can handle any job you throw at it.
Additional Information
The Canon Eos 1DX contains a full-frame, 18.1MP CMOS sensor that features pixels that are 1.25 microns larger than the pixels found in Canon's EOS-1D Mark IV, and 0.55 microns larger than the pixels found in Canons EOS-5D Mk II, which combined with gapless micro lenses, should translate into greater dynamic range, less noise and smoother shadow-to-highlight transitions than both of the aforementioned cameras. As with all EOS 1D-series cameras, the 1DX features 14-bit A/D conversion for optimal color and tonal range.
Canon has brought the best of the EOS-1D Series of digital cameras into one phenomenal model: the new flagship of the EOS line, the EOS-1D X. Its full-frame 18.1 Megapixel CMOS sensor and all-new Dual DIGIC 5+ Image Processors deliver high quality image capture at up to 12 fps (14 fps in Super High Speed Mode) and a powerful ISO range of 100 - 51200 (up to 204800 in H2 mode) provides sharp, low-noise images even in the dimmest low-light conditions. An all-new, 61-Point High-Density Reticular AF and 100,000-pixel RGB Metering Sensor that uses a dedicated DIGIC 4 Image Processor, makes the EOS-1D X reach new levels of focus speed and accuracy delivering advanced tracking even for the most challenging shooting situations. Taken all together, the EOS-1D X's improved HD video capture, numerous connectivity options, combination of processing power and durable construction, including shutter durability tested to 400,000 cycles, make it the ultimate EOS.