The FX-format 20.8MP CMOS sensor is paired with the EXPEED 6 image processor to offer a proven mixture of high sensitivity, nuanced image quality, and fast overall performance. At native values, a sensitivity range from ISO 100-102400 permits working in a broad array of lighting conditions, an can be further expanded to ISO 50-3280000 (Lo 1 to Hi 5) to handle the most challenging of situations. The mixture of resolution and sensor size also contributes to clean image quality and smooth color transitions with reduced noise throughout the sensitivity range. In addition to benefitting image quality, the EXPEED 6 processor also affords a wealth of speed throughout the camera system, including a top continuous shooting rate of 14 fps for up to 200 consecutive frames. For sound-sensitive situations, a silent 10.5 fps rate can be used for discreet shooting and, if choosing to work in a lower resolution and in live view, up to 60 fps shooting is possible at 2MP or 30 fps shooting at 8MP.

Dubbed "the most powerful AF in Nikon's history," the Multi-CAM 37K autofocus system uses an intelligent array of 105 all cross-type points to quickly and accurately achieve focus across the frame and in a variety of lighting conditions. This high-density system allows photographers to set focus almost anywhere within the frame in order to avoid recomposing. This unique design reduces the area of non-AF-sensitive areas in order to make the effective coverage 1.6x greater than in previous models, which allows for more accurate and faster focusing across the frame, with both still and moving subjects. When working with moving subjects, 17 custom Group Area AF settings can be used to set and maintain focus on subjects featuring busy backgrounds or fast subject movement. Benefitting the use of super telephoto lenses and teleconverters, 15 of the points are compatible with an effective aperture of f/8 and all 1053 points support working with effective apertures of f/5.6 or brighter. Complementing the abundance of focusing points is a dedicated AF engine, which offers quick response times to benefit tracking fast and randomly moving subjects, even at the top 14 fps shooting rate. The AF engine also contributes to enhanced focusing sensitivity, with the ability to focus at -4.5 EV for working in very dark, low-contrast situations. Furthering the versatility of the focusing system, seven different AF-area modes can be selected to support varying types of subject matter:

•  Single-Point AF: The camera uses a single point to find focus.
• Dynamic-Area AF: Available with 9, 25, 49, or 105-point selections, this mode uses a primary single focus point to lock onto focus, and then makes use of the surrounding points for maintaining focus while tracking erratically-moving subjects.
• Group-Area AF: This mode treats smaller groups of AF points as a single point for a wider field of recognition and is well-suited to tracking faces or other detailed subjects.
• 3D-Tracking: Using a subject's color information, this mode utilizes all 105 points to maintain focus on a moving subject while half-pressing the shutter button.
• Auto-Area AF: This mode makes use of all 105 points to quickly identify the main subject, and then prioritizes recognized faces as portrait subjects in any AF servo mode.

In addition to the range of AF-area modes, an AF lock-on function can also be used to improve subject tracking performance and can be adjusted by two parameter—quick or delayed blocked shot AF response and erratic or steady subject movement. By configuring these settings, the AF performance can be optimized to handle a wide variety of subject movement types. Lastly, a unique auto AF fine-tune function can be employed to ensure the best possible focus for each mounted lens. Rather than relying on photographing distance charts, this function lets you achieve precise focus manually in live view, and then have the AF system calibrate itself to the fine-tuned focus position in order to alleviate front- and back-focusing issues.

Taking notice of multimedia image-maker's needs, the D6 incorporates adept video recording capabilities. Able to record UHD 4K at 30, 25, and 24 fps frame rates, Full HD and HD recording is also supported, along with the ability to save movie files to the in-camera memory cards or as an uncompressed file to an optional external recorder via HDMI out. As with still shooting, the wide range of sensitivities is available for recording in low- and bright-light conditions, ranging from expanded ISO 100-3280000, and sensitivity values are manually adjustable via the dedicated movie-shooting menu. Also, a video-optimized Flat Picture Control mode can be used during recording to flatten the overall contrast curve for more control during post-production and color grading. In regard to handling, a dedicated power aperture button (Pv) makes it possible to achieve smooth, continuous exposure transitions when switching from light to dark areas, and Auto ISO can also be used to maintain consistent brightness when working in changing light situations. Audio recording can be handled using the built-in stereo microphone or an optional external mic can be added via the 3.5mm stereo jack for greater control over quality. Regardless if using the in-camera mic or an external mic, audio levels can be adjusted in 20 increments and live monitoring is possible via the headphone jack, which afford 30 different volume levels for playback. In addition to straight movie recording, time-lapse recording, for up to 9999 consecutive frames shot over the course of up to one week, is also possible with up to UHD 4K at 30 fps output from the camera.

•  A large 3.2" rear LCD monitor features a high 2.36m-dot resolution for clear, vivid playback and live view shooting. The monitor is also a touchscreen for more intuitive menu navigation and settings control. The touchscreen is also usable while shooting, giving you the ability to choose a focus point or an area to set the white balance from. The screen can also be used as a keyboard for quickly entering notes, copyright info, or IPTC metadata.
•  The bright 0.72x optical pentaprism viewfinder covers 100% of the FX frame for framing accuracy. A detachable DK-27 Eyepiece Adapter also lets you attach a rain cover directly to the viewfinder for more comfortable shooting in wet conditions.
• Configured with two CFexpress Type B/XQD memory card slots, allowing you to extend file saving capabilities by permitting overflow recording, in-camera file duplicating, or the ability to segregate raw and JPEG files between the two cards.
• The familiar body design incorporates a vertical grip that is designed to be equally as comfortable and efficient when shooting in the vertical or horizontal orientation.
• Advanced customization options help to create an intuitive and efficient way of working with the camera, including configuring re-callable preset camera settings, such as distinct AF settings, for immediate use and quick switching depending on the shooting situation. There are 14 different buttons that can be personalized with up to 46 different functions for easier access to the settings you need and an intuitive i Menu, accessible via the i button, provides a shortcut to the most oft-used camera settings, which can be configured to your own needs. Additionally, save up to four custom shooting combinations from the Custom Settings Menu and up to four from the Photo Shooting Menu for faster switching between shooting settings.
• A robust magnesium alloy chassis is both dust- and weather-resistant to benefit working in harsh climates and inclement conditions.
• The ergonomic grip and overall form factor are shaped to benefit handling for extended periods of time and are further accentuated by anti-slip, textured joysticks and easy-to-open card slot covers. Additionally, most of the rear buttons on the rear of the camera are illuminated for greater visibility when working in dim lighting conditions.
• An electronic front-curtain shutter helps to minimize mechanical vibrations in order to better ensure sharpness during long exposures.
• The high-precision shutter mechanism has been tested for a long lifespan of 400,000 actuations.
•  The included EN-EL18c rechargeable lithium-ion battery is CIPA-rated to last for approximately 3580 shots per charge in single-frame release modes.
• Built-in Wi-Fi and Bluetooth work in conjunction with Snapbridge for seamless wireless file transferring and remote camera control from a mobile device.
• Integrated GPS module enables in-camera file geotagging.
• The built-in wired LAN function of 1000 Base-T (Gigabit) standard enables high-speed, seamless transferring of still imagery and movie files for expediting an entire post-production workflow. For more robust wireless file transferring, the D6 is also compatible with the optional WT-6A Wireless Transmitter.

The intelligent Scene Recognition System with 3D Color Matrix Metering III utilizes a 180,000-pixel RGB sensor to evaluate and analyze all aspects within a scene, including brightness, contrast, subject distance, and the scene colors, to quickly determine an accurate exposure and white balance setting to best render the scene at hand. The information gathered is also checked against onboard reference images to ensure consistency from image to image in regard to exposure, white balance, i-TTL flash settings, and subject-tracking AF performance.

•  Focus Shift Mode benefits working with focus stacking techniques by automatically recording a series of images at different focus steps. Up to 300 individual frames can be recorded within these steps, with the D6 automatically shifting focus between each shot to achieve an extended depth of field. The sequential images will be saved within a unique folder on the memory card in order to keep each series of exposures segregated for a faster and easier post-production workflow.
•  For long exposure shooting, specific exposure times longer than 30 seconds can be set for more accurate results. Configured in the custom settings menu, and usable in the M mode, selectable times are available from 60 sec up to 900 sec.
•  Reducing post-production times, there are 20 unique Creative Picture Controls, which can be previewed in real time, and used with both photos and videos, to adjust the look and feel of imagery.
•  Multiple exposures can be made in the traditional sense, of sequentially shooting consecutive frames over one another, or can be made using any photo previously shot with the camera via the Retouch menu.