Both CFast and CompactFlash memory card slots are available, and the 1D X Mark II also supports sharing imagery over Wi-Fi, as well as wireless remote camera control, via the optional WFT-E8A Wireless File Transmitter. Additionally, a built-in GPS module permits in-camera geotagging of photos and videos, and also allows for auto time syncing with the Universal Time Code for more efficient file sharing and organization.
Designed for both professional stills shooting and video recording, the 1D X Mark II supports DCI 4K (4096 x 2160) resolution recording at up to 60 fps at 800 Mbps, along with Full HD 1080p shooting at 120 fps at 360 Mbps for slow-motion playback. When recording in-camera, 4K video has 4:2:2 sampling and 8-bit color depth, while Full HD 1080p footage has 4:2:0 sampling.
Full HD 1080p video
Uncompressed Full HD 1080p video can also be saved via HDMI to an optional external recorder with 4:2:2 color sampling. 4K video is recorded using a central 4096 x 2160 area of the sensor, while Full HD recording makes use of the entire full frame, and a top sensitivity of ISO 12800 is available with 4K or ISO 25600 with Full HD.
Audio can be recorded using the onboard stereo microphone or an optional external mic can also be used via the 3.5mm mic jack. Real-time audio monitoring is possible, via the 3.5mm headphone jack. The 4K video recording also avails the ability to take 8.8MP still frame grabs during playback and save them as single images.