45.7MP BSI CMOS sensor is used for high-resolution shooting, impressive low-light quality, and fast readout speeds to benefit continuous shooting, movies, and time-lapse recording. The back-illuminated design of the sensor affords noticeably clean high-sensitivity output and reduced noise when working at high ISO values, up to a native ISO 25600, as well as vivid and smooth quality at sensitivities as low as ISO 64. The sensor's design also omits the conventional optical low-pass filter in order to achieve the greatest sharpness and resolution from the sensor.

Utilizing the sensor and processor attributes for more than just still imagery, the Z 7II is also a more-than-capable multimedia camera. UHD 4K video recording is possible up to 60p and Full HD 1080p video recording is also supported at up to 120p for slow motion playback. Video files can be saved to the in-camera memory cards or as an uncompressed file to an optional external recorder via HDMI out.

Located on the sensor is an array of 493 phase-detect autofocus points covering 90% of the image area both vertically and horizontally. This provides fast and accurate focusing for both stills and video and with a wide coverage area, subject tracking will work out to near the edges of the frame. Hybrid AF is available for video, which will automatically switch between phase- and contrast-detect systems to provide smooth focus during shooting.

In-body 5-axis sensor-shift Vibration Reduction compensates for up to 5 stops of camera shake regardless of the Z-type lens being used. This system also works with adapted F-mount lenses, when using the optional FTZ Adapter, where 3-axis stabilization is used.