The camera is capable of shooting 10 frames per second at a resolution of 16MP on full frame sensor. With low light sensitivity of ISO up to 204.800, it is supposed to be the next best thing for professional photographers.
D4 primary features
- New Nikon FX-format CMOS image sensor
Support for an incredibly wide range of sensitivities, from ISO 50 to ISO 204800The D4 is equipped with a new Nikon FX-format CMOS image sensor (imaging size of 36.0 x 23.9 mm) developed by Nikon. The superior performance of the FX-format CMOS image sensor with its effective pixel count of 16.2-million pixels offers excellent resolution and image quality under an incredible variety of lighting conditions. Despite the increase in pixel count, the D4 reads out data faster than the D3S. The range of standard sensitivities has been expanded to ISO 100 to ISO 12800. What's more, support for ISO 50 and additional expansion up to ISO 204800 is also possible, enabling effective shooting under a variety of lighting conditions without concern for any sacrifice in image quality.
- New EXPEED 3 image-processing engine with superior, high-speed processing capabilitiesThe new EXPEED 3 image-processing engine built into the D4 offers better image quality and even faster processing speeds for vivid yet faithful color reproduction, a broader dynamic range, and rich expression of tones. It also effectively suppresses noise with advanced noise-reduction processing for images captured at high sensitivities under dim lighting, all while preserving definition and sharpness. Noise-reduction processing designed especially for movies maintains crisp, clear outlines in movies recorded in low-light situations. EXPEED 3 has high-speed processing capabilities for a variety of task, and it uses power effectively, contributing greatly to the camera's power-saving design.
- 91K-pixel RGB sensor for the more accurate Advanced Scene Recognition SystemThe D4 is equipped with the Advanced Scene Recognition System, which supports face recognition* when images are framed using the optical viewfinder. The new 91K-pixel (approximately 91,000 pixels) RGB sensor recognizes human faces for more frequent focus acquisition on human faces when Auto-area AF AF-area mode is used. When a human face is detected in the frame, 3D Color Matrix Metering III bases exposure control on the brightness of that face so that the face is optimally exposed even with backlighting. In addition, the high resolution of the metering sensor with its roughly 91,000 pixels enables extremely precise analysis of the scene for more accurate control over autofocusing, auto exposure, i-TTL flash control, and auto white balance.
- *There is no display in the viewfinder that shows when a face or faces have been recognized.
- Faster and more accurate AF with 51 focus pointsThe 51 focus point AF system built into the D4 utilizes the new Advanced Multi-CAM 3500FX autofocus sensor module for faster, more accurate autofocusing that performs extremely well under dim lighting.
The 15 focus points at the center of the frame are cross-type sensors that detect phase differences both horizontally and vertically. All 51 focus points are fully functional when lenses with a maximum aperture of up to f/5.6 are used, and the cross-type sensors make the most of this capability. Precise focus can be quickly acquired with autofocusing using all AF NIKKOR lenses, even under lighting as dim as −2 EV (ISO 100, 20°C/68°F), the level at which the scene through the viewfinder can just be made out by the human eye. What's more, 11 focus points (five at center with an additional three to each side) are fully functional when lenses with a maximum aperture of f/8 are used. This enables very precise focus acquisition with sports photography and the like when super-telephoto NIKKOR lenses are used with a teleconverter (2.0x) at a combined aperture value of f/8.
In addition, adoption of a new algorithm enables faster autofocus initiation for even more certain and sharper capture of defining moments especially necessary when shooting sports scenes. The new high-speed AF system also supports high-speed continuous shooting at approximately 10 fps* in FX format with AF and AE tracking.
- *Measured according to CIPA guidelines. Value with shooting in AF-C autofocus mode, [S] or [M] exposure mode, shutter speed of 1/250 s or faster, all other settings at their default values.
- Multi-area Mode Full HD D-movie with three image area optionsA dedicated movie-record button has been positioned near the shutter-release button for smooth starting and stopping of movie recording with a feel similar to that of still-image shooting. Full-HD movie recording at a frame size of 1920 x 1080 and frame rate of 30 fps is supported, and the H.264/MPEG-4 AVC video compression method has been adopted. Movies up to 29 minutes 59 seconds*1 can be recorded. Image sensor sensitivity begins at ISO 200 and can be expanded to the same ISO 204800 equivalent possible with still-image shooting.
Full-HD movies can be recorded with the D4 using one of three image areas: FX-based movie format*2, DX-based movie format, or 1920 x 1080; 30 fps/25 fps/24 fps crop. FX-based movie format makes full use of the large image sensor, enabling movies with an emphasis on pleasing blur characteristics. When a DX lens is attached, DX-based format is automatically selected. This format is useful for creating an extension to the local length of an existing lens. For an even stronger telephoto effect, the 1920 x 1080 crop format brings an approximately 2.7x crop of the picture angle while delivering outstanding video quality and detail, obtaining 1080p Full HD. By choosing the movie format appropriate for the particular scene, the three image area options available with a single camera enable more flexible imaging expression through collaboration with the entire NIKKOR lens lineup, including DX lenses.
Other D4 functions and features
- Extremely durable shutter that has passed testing for 400,000 cycles
- Magnesium alloy adopted for the very strong, durably body that is very resistant to dust and water
- Effective sealing using O rings and packing make the camera more resistant to dust and water
- Silent shutter-release mode for live view photography that almost completely eliminates the sounds of the mirror and shutter operation
- A time-lapse photography feature, with which the camera automatically takes photos at selected intervals to record a time-lapse movie, which can be played back at 24–36,000x normal playback speed
- Operation optimized for both horizontal (landscape) and vertical (portrait) shooting
- Button backlights (illuminators) for increased visibility when working in dimly lit or dark situations
- High-performance viewfinder, utilizing a glass pentaprism, with a frame coverage of approximately 100% (FX format) and magnification of approximately 0.7x
- Four image area options for still shooting—FX (36 x 24), 5:4 (30 x 24), 1.2x (30 x 20), DX (24 x 16)—with viewfinder indicator that identifies the current image area
- A 3.2-inch, approximately 921k-dot LCD monitor with reinforced glass and wide viewing angle; integration of the glass and panel reduce internal reflections
- A virtual horizon that shows the degree to which the camera is tilted sideways (roll), forward or backward (pitch) with display in the monitor and viewfinder
- White balance that can be adjusted in units of 10 K; white balance can be specified separately for shooting (white balance applied to images) and monitor display with still-image shooting in live view mode