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Canon EOS-1D X Mark III vs Canon EOS R1

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

Better figure, where one is clearly better

CanonEOS-1D X Mark IIICanonEOS R1
Overview
ReleasedFebruary 2020November 2024
Image and sensor
Camera typeDSLRMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSBack-illuminated stacked CMOS
Sensor dimensions35.9 × 23.9 mm36 × 24 mm
Effective resolution20.1 MP24.2 MP
Largest image5472 × 36486000 × 4000
RAW recordingYesYes
Standard ISO range100–102400100–102400
Sensor detailApproximately 20.1 million effective pixels on a 35.9 × 23.9 mm full-frame CMOS sensor; automatic/manual cleaning and Dust Delete DataFull-frame back-illuminated stacked CMOS; approximately 24.2 million effective and 26.7 million total pixels; fixed optical low-pass filter and integrated cleaning
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 availableRAW, C-RAW, JPEG and HEIF; in-camera neural-network upscaling creates approximately 96 MP JPEG/HEIF output, not additional native sensor resolution
ISO detailStandard still-photo ISO 100–102400, expandable to ISO 50, 204800, 409600 or 819200; movie ISO range depends on recording modeNormal still-photo ISO 100–102400, expandable to 50–409600; movie ranges depend on colour profile
Image processorDIGIC XDIGIC X and DIGIC Accelerator
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 directly; EF/EF-S with EF-EOS R adapters; EF-M incompatible; approximately 1.6× crop with RF-S/EF-S lenses
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 Intelligent AF with cross-type detection and eye-control selection; people, animal and vehicle detection, registered-person priority and sport-specific Action Priority; cross-type AF unavailable for movies and mechanical/first-curtain Servo AF high-speed-plus bursts; lens and mode restrictions apply
ShutterMechanical and electronic first curtain 30–1/8000 second plus Bulb; live-view electronic 0.5–1/8000 second; maximum flash sync 1/250 secondMechanical/electronic first curtain 30–1/8000 second; electronic 30–1/64000 second; Bulb supported; available range varies by mode
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 performanceUp to 40 fps electronic or 12 fps mechanical/first curtain; current UK maker buffer approximately 500 JPEG or 230 RAW electronic and 1000+ JPEG/RAW mechanical; pre-continuous capture up to 20 preceding frames; Servo AF maximum rates require compatible lenses and suitable settings
Stabilisation detailMovie Digital IS available; this is electronic movie stabilisation rather than sensor-shift IBISFive-axis sensor-shift IBIS with coordinated lens IS; up to 8.5 stops centre and 7.5 periphery under CIPA 2024 yaw/pitch/roll testing with RF 24-105mm F2.8L IS USM Z at 105 mm; separate Movie Digital IS
FlashExternal EL/EX Speedlite E-TTL II support; PC sync terminal and flash controlsExternal Speedlite support; current UK full-frame sync 1/200 second mechanical, 1/320 first curtain and 1/400 electronic with sync-speed-priority restrictions; Asian table lists earlier 1/250 first-curtain and 1/320 electronic figures
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/movies–
Video
Highest video resolution5472 × 2886 at 59.94 fps6000 × 3164 at 59.94 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 recordingInternal 6K RAW/Light RAW 6000 × 3164 up to 59.94/50 fps; DCI 4K up to 59.94 fps, UHD 4K up to 119.88/100 fps and DCI 2K/Full HD up to 239.76/200 fps; Canon Log 2/3, proxy recording and simultaneous Full HD/still shooting; UHD/HD horizontal coverage 94% versus 100% for RAW/DCI, with separate cropped modes
AudioBuilt-in monaural microphone; stereo external microphone/line input and headphone sockets; adjustable levels, wind filter and attenuatorInternal stereo microphone, external microphone input and headphone output; compatible four-channel recording options
Screen and viewfinder
ViewfinderOpticalElectronic
Screen size3.15″3.2″
Screen dots2,100,0002,100,000
TouchscreenYesYes
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 inchesFully articulating capacitive 3.2-inch touchscreen, approximately 100% coverage; top status panel
Viewfinder detailOptical eye-level pentaprism with approximately 100% coverage and 0.76× magnification with a 50 mm lens at infinity; built-in eyepiece shutter0.64-inch OLED with approximately 9.44 million dots, 100% coverage and selectable 0.9×/0.8×/0.7× magnification; refresh up to approximately 120 fps
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)2850 photographs700 photographs
Body weight1250 g920 g
Release detailCanon Camera Museum records first marketing in February 2020; no exact first-sale day inferredCanon Camera Museum confirms marketed November 2024; no market-wide retail day inferred from regional launch dates
Recording mediaTwo CFexpress Type B memory-card slots; still/movie separation and recording/backup optionsDual CFexpress Type B slots, CFexpress 2.0/VPG400; current UK page specifies maximum 8 TB while Asian table states 2 TB; no SD slot
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, full-size HDMI Type A, RJ45 2.5GBASE-T Ethernet, microphone/headphone sockets, N3 remote and PC sync; 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 geotaggingUK Wi-Fi 802.11ax 2×2 MIMO at 2.4/5/6 GHz with regional restrictions and Bluetooth 5.3; integrated GPS/GLONASS/MICHIBIKI support
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-E19; maker claim at 23°C approximately 700 photographs using EVF or 1330 using LCD
Charging–Supplied LC-E19E charger; optional AC-E19N with DR-E19 DC coupler or PD-E1/PD-E2 USB power adapters
DimensionsApproximately 158.0 × 167.6 × 82.6 mm (width × height × depth)Approximately 157.6 × 149.5 × 87.3 mm (width × height × depth)
Weight detailApproximately 1250 g body only or 1440 g including battery and card; attached lens in official image is excludedApproximately 920 g body only; 1115 g including battery and card
Materials–Magnesium alloy and glass-fibre polycarbonate; integrated vertical grip with duplicated controls; dust- and drip-resistant construction is not waterproof

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