The Nikon D4 is the fastest and smallest professional camera ever created by the manufacturer of the same name for sports and action photography. The level of noise emissions is really low, while the performance is truly excellent in terms of ISO resolution and shooting speed (10 frames per second which can increase up to 20 images per second). As a result, it is possible to focus, expose and capture moving subjects without any problem. Focal length detection and facial recognition occur automatically and at double the speed of what happens with other cameras in the same category on the market. Consequently, in a single series of shots it becomes possible to capture as many as 200 full resolution images. Secondly, this Nikon camera has excellent technical characteristics also when it comes to design. It guarantees an excellent grip and a high level of comfort unlike the D800: in fact it fits perfectly in the hand thanks to its clean lines. Operation is very simple and intuitive because auto-dimming LEDs are used to highlight the AF areas: in this way the controls can be displayed precisely and the camera surfaces remain completely free. Other elements to take into consideration are: - the presence of two sets of command dials; - a vertical socket incorporated with two shutters, each of which is equipped with a function button to be programmed independently; - two AF-ON buttons.