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Canon EOS-1D X Mark III vs Canon EOS R6 V

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

CanonEOS-1D X Mark IIICanonEOS R6 V
Overview
ReleasedFebruary 2020June 2026
Image and sensor
Camera typeDSLRMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSCMOS
Sensor dimensions35.9 × 23.9 mm35.9 × 23.9 mm
Effective resolution20.1 MP32.5 MP
Largest image5472 × 36486960 × 4640
RAW recordingYesYes
Standard ISO range100–102400100–64000
Sensor detailApproximately 20.1 million effective pixels on a 35.9 × 23.9 mm full-frame CMOS sensor; automatic/manual cleaning and Dust Delete DataApproximately 32.5 million effective and 34.2 million total pixels; full-frame 35.9 × 23.9 mm CMOS; native still files approximately 32.3 MP
Image formats14-bit RAW/C-RAW, 8-bit JPEG and 10-bit HEIF HDR PQ; electronic shutter uses 12-bit RAW conversion; simultaneous RAW and JPEG or HEIF availableJPEG, HEIF, RAW and C-RAW stills; 12-bit RAW movie files or XF-HEVC S / XF-AVC S MP4
ISO detailStandard still-photo ISO 100–102400, expandable to ISO 50, 204800, 409600 or 819200; movie ISO range depends on recording modeStandard still ISO 100–64000, expandable to ISO 50–102400; normal movie ISO 100–25600, with Canon Log and HDR ranges varying by profile
Image processorDIGIC XDIGIC X
Lens and shooting
Lens mountCanon EFCanon RF
Stabilisation–Sensor shift
Maximum continuous burst20 fps40 fps
Lens detailCanon EF lenses; EF-S and EF-M incompatible; official photo shows an attached EF 24-70mm F2.8L II USM whose figures are separate from the bodyRF and RF-S lenses directly; EF and EF-S through EF-EOS R adapter; no EF-M support; RF-S/EF-S use approximately 1.6× cropping and disable open-gate recording
AutofocusOptical-viewfinder phase-detection AF with up to 191 points and 155 cross-type points depending on lens, with face/head recognition; live-view Dual Pixel CMOS AF with up to 3869 selectable positions, 525 automatic areas and eye detection; area coverage depends on lensDual Pixel CMOS AF II with people, animal and vehicle recognition and registered-person priority; up to 1053 still-photo or 897 movie AF zones; still One-Shot, AI Focus or Servo AF
ShutterMechanical and electronic first curtain 30–1/8000 second plus Bulb; live-view electronic 0.5–1/8000 second; maximum flash sync 1/250 secondElectronic sensor rolling shutter only; no shutter unit; 30–1/16000 second for stills, with 1/16000 available in Tv or M and up to 1/8000 in Fv, P or Av
Burst detailUp to 16 fps through the optical viewfinder or 20 fps in live view, with AF/AE tracking; live-view mechanical or electronic shutter supported; maker buffer claim at least 1000 JPEG, HEIF, RAW or RAW+JPEG frames in viewfinder shooting using a specified 325 GB test card; approximately 350 RAW+HEIF; lens, lighting, power, temperature and settings affect performanceElectronic H+ up to 40 fps with One-Shot, AI Focus or Servo AF, H 20 fps or L 5 fps; manual maker buffer approximately 150 RAW on CFexpress or 140 on SD under One-Shot AF, ISO 100, Standard Picture Style and 23°C; settings, battery, temperature, cropping and card affect results
Stabilisation detailMovie Digital IS available; this is electronic movie stabilisation rather than sensor-shift IBISFive-axis sensor-shift IBIS with coordinated optical lens stabilisation; maker up to 7.5 stops centre and 7 stops periphery; Movie Digital IS is separate
FlashExternal EL/EX Speedlite E-TTL II support; PC sync terminal and flash controlsCurrent maker manual supports external flash with 1/60-second electronic sync and ±3 EV flash compensation; original regional launch table says flash unsupported, so capability depends on firmware
Exposure controlsP, Tv, Av, M, Bulb and three custom modes; viewfinder 216-zone metering with approximately 400000-pixel RGB+IR sensor; live-view/movie 384-zone image-sensor metering; compensation up to ±5 EV through viewfinder or ±3 EV in live view/moviesAuto, scenes, Fv, P, Tv, Av and M; ±3 EV compensation in 1/3 or 1/2 stops
Video
Highest video resolution5472 × 2886 at 59.94 fps6960 × 4640 at 29.97 fps
Video detailInternal 12-bit RAW 5472 × 2886 up to 59.94/50 fps; DCI 4096 × 2160 and UHD 3840 × 2160 up to 59.94/50 fps; Full HD up to 119.9/100 fps; H.264 8-bit 4:2:0 or H.265 10-bit 4:2:2 with Canon Log; main RAW 59.94p maker bitrate approximately 2600 Mbps; 4K HDMI output supported; DPReview notes autofocus requires cropped 4K or lower frame rates in full-width recordingHighest-resolution RAW open-gate 6960 × 4640 at up to 29.97/25 fps; open-gate MP4 6912 × 4608; 17:9 Light RAW up to 59.94/50 fps; oversampled 4K up to 59.94/50 fps and normal 4K up to 119.9/100 fps, Full HD up to 179.8/150 fps; Canon Log 2/3 and 10-bit 4:2:2 options; active cooling fan; normal clip limit six hours below 100 fps or two hours at 100 fps and above, subject to temperature, power and other limits
AudioBuilt-in monaural microphone; stereo external microphone/line input and headphone sockets; adjustable levels, wind filter and attenuatorStereo built-in microphones, external 3.5 mm microphone and headphone connections and compatible multi-function-shoe microphones
Screen and viewfinder
ViewfinderOpticalNone
Screen size3.15″3″
Screen dots2,100,0001,620,000
TouchscreenYes–
Tilting screenNoYes
Display detailFixed capacitive touchscreen; maker manual specifies 8.01 cm (3.15 inches), approximately 2.1 million dots; commonly marketed rounded as 3.2 inches3-inch vari-angle LCD with approximately 1.62 million dots; no viewfinder
Viewfinder detailOptical eye-level pentaprism with approximately 100% coverage and 0.76× magnification with a 50 mm lens at infinity; built-in eyepiece shutter–
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)2850 photographs640 photographs
Body weight1250 g598 g
Release detailCanon Camera Museum records first marketing in February 2020; no exact first-sale day inferredMaker US launch specifies late June 2026 for the body, with later kit/firmware variants; Japan maker subsequently confirms 26 June, while Digital Camera World reports 24 June for its market; month retained rather than assigning a regional day globally
Recording mediaTwo CFexpress Type B memory-card slots; still/movie separation and recording/backup optionsCFexpress Type B slot with CFexpress 2.0 and VPG400 support, plus UHS-II SD/SDHC/SDXC slot; RAW movies require CFexpress; capacities above 8 TB handled as 8 TB and cards over 2 TB cannot update firmware
PortsUSB-C SuperSpeed Plus USB 3.1 Gen 2, mini HDMI Type C, microphone/line input, headphone socket, N3 remote terminal, RJ45 Ethernet, WFT-E9 extension connector and PC flash syncUSB-C 3.2 Gen 2 equivalent 10 Gbps for transfer, power and charging; full-size HDMI Type A, 3.5 mm microphone and headphone sockets, E3 remote terminal and multi-function shoe
Wireless connectionsWi-Fi 802.11b/g/n at 2.4 GHz and Bluetooth Low Energy 4.2; wired Ethernet 10/100/1000BASE-T; GPS, GLONASS and QZSS geotaggingWi-Fi at 2.4/5 GHz and Bluetooth Low Energy 5.1; FTP/FTPS support and USB UVC/UAC streaming
Battery life detailLP-E19; maker approximately 2850 viewfinder or 610 live-view photographs at 23°C with a fully charged battery; approximately 2360/530 respectively at 0°C, based on Canon/CIPA testingLP-E6P; maker CIPA power-saving claim 640 photographs at 23°C with cooling fan off, or 510 under Canon smooth-display measurement; older LP-E6NH/LP-E6N restrict functions and endurance, LP-E6 incompatible
Charging–USB charging/power using compatible PD-E2 or PD-E1; DC Coupler DR-E6P requires PD-E2 and cannot pair with PD-E1
DimensionsApproximately 158.0 × 167.6 × 82.6 mm (width × height × depth)Approximately 141.8 × 83.3 × 79.7 mm (width × height × depth), based on CIPA guidelines
Weight detailApproximately 1250 g body only or 1440 g including battery and card; attached lens in official image is excludedApproximately 598 g body only, excluding body cap and shoe cover; 688 g with battery and CFexpress card under CIPA guidelines
Materials–Magnesium-alloy chassis and top cover; dust- and drip-resistant sealing including the cooling fan; vertical tripod socket

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