Canon EOS-1D X Mark II Specification Guide (en)

Digital, AF/AE single-lens reflex camera 
Recording Media
CF Card (Type I; compatible with UDMA 7 CF cards) and CFast™ Card (CFast 2.0™* supported)
As of February 2016, compatibility has been verified for the following CFast™ memory cards:
Model Numbers
Extreme PRO CFast 2.0™ Card
128 GB
Extreme PRO CFast 2.0™ Card
64 GB
Proper operation can not be guaranteed for all recording media. Long term usage may reduce a CFast™ 
card’s write speed. We recommend users regularly fully format and refresh their card using the  
“Full Format and Refresh Tool.”
* Canon is an authorized licensee of the CFast 2.0™ trademark, which may be registered in various jurisdictions.
Image Format
Approx. 36mm x 24mm (35mm Full-frame)
Compatible Lenses
Canon EF Lenses (excluding EF-S and EF-M lenses)
Lens Mount
Canon EF Mount
Image Sensor
High-sensitivity, high-resolution, large single-plate full-frame CMOS sensor
Effective Pixels
Approx. 20.2 megapixels
Total Pixels
Approx. 21.5 megapixels
Aspect Ratio
3:2 (Horizontal: Vertical)
Color Filter System
RGB primary color filters
Low Pass Filter
Fixed position in front of the image sensor
Dust Removal Feature
(1) Self Cleaning Sensor Unit
  • Self-cleaning can be done automatically when the power is turned on/off.
  • During manual cleaning ([Clean now]), the data for light spot correction is also obtained.
(2) Dust Delete Data acquisition and appending
  •  The coordinates of the dust adhering to the low-pass filter are detected by a test shot and appended 
to subsequent images.
  •  The dust coordinate data appended to the image is used by the EOS software to automatically erase 
the dust spots.
(3) Manual cleaning
Recording System
Recording Format
Design Rule for Camera File System 2.0 and EXIF 2.3
Image Format
(1) Still Image: JPEG, RAW (14 bit Canon Original), M-RAW, S-RAW, RAW+JPEG, M-RAW+JPEG, S-RAW+JPEG
(2)  Video: MOV (4K Movie: Motion JPEG, Full HD Movie: MPEG4 AVC/H.264*; Audio: Linear PCM),  
MP4 (Movie: MPEG4 AVC/H.264*; Audio: AAC)
* Variable (averaged) bit rate