Canon EOS-1D X Mark III vs Canon EOS R8 Mark II

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EOS-1D X Mark III compared with EOS R8 Mark II

	CanonEOS-1D X Mark III	CanonEOS R8 Mark II
Overview
Released
Released	February 2020	Coming late October 2026
Image and sensor
Camera type
Camera type	DSLR	Mirrorless
Sensor format
Sensor format	Full frame	Full frame
Sensor type
Sensor type	CMOS	CMOS
Sensor dimensions
Sensor dimensions	35.9 × 23.9 mm	36 × 24 mm
Effective resolution
Effective resolution	20.1 MP	24.2 MP
Largest image
Largest image	5472 × 3648	6000 × 4000
RAW recording
RAW recording	Yes	Yes
Standard ISO range
Standard ISO range	100–102400	100–102400
Sensor detail
Sensor detail	Approximately 20.1 million effective pixels on a 35.9 × 23.9 mm full-frame CMOS sensor; automatic/manual cleaning and Dust Delete Data	Full-frame 36.0 × 24.0 mm CMOS with approximately 24.2 million effective and 25.6 million total pixels; fixed low-pass filter and integrated sensor cleaning
Image formats
Image formats	14-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 available	14-bit RAW, C-RAW and Dual Pixel RAW; 8-bit JPEG and 10-bit HEIF; simultaneous RAW and JPEG or HEIF
ISO detail
ISO detail	Standard still-photo ISO 100–102400, expandable to ISO 50, 204800, 409600 or 819200; movie ISO range depends on recording mode	Standard still-photo ISO 100–102400, expandable to ISO 50 or 204800; normal movie ISO 100–25600, with expansion dependent on recording mode
Image processor
Image processor	DIGIC X	DIGIC X
Lens and shooting
Lens mount
Lens mount	Canon EF	Canon RF
Stabilisation
Stabilisation	–	Sensor shift
Maximum continuous burst
Maximum continuous burst	20 fps	40 fps
Lens detail
Lens detail	Canon 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 body	Canon RF and RF-S lenses directly; EF and EF-S via an EF-EOS R adapter; EF-M incompatible; RF-S and EF-S use 1.6× cropping
Autofocus
Autofocus	Optical-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 lens	Dual Pixel CMOS AF II with up to 4368 selectable still-photo positions and 1053 zones; people, dogs, cats, birds, horses and vehicle detection, plus registered-person priority; coverage and available areas depend on lens and AF mode
Shutter
Shutter	Mechanical and electronic first curtain 30–1/8000 second plus Bulb; live-view electronic 0.5–1/8000 second; maximum flash sync 1/250 second	Electronic first curtain 30–1/4000 second plus Bulb; electronic 30–1/16000 second, with 1/16000 restricted to Fv, Tv or M; no mechanical first curtain
Burst detail
Burst detail	Up 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 performance	Electronic H+ up to 40 fps, H 20 fps or L 5 fps; electronic first curtain up to 6 fps; maker electronic buffer 190 JPEG or 73 RAW under One-Shot AF, ISO 100 and 23°C with a 128 GB UHS-II card; lens, battery, shutter, aperture, lighting and settings affect speed; pre-continuous capture retains up to 20 earlier frames
Stabilisation detail
Stabilisation detail	Movie Digital IS available; this is electronic movie stabilisation rather than sensor-shift IBIS	Five-axis sensor-shift IBIS with coordinated optical lens stabilisation; maker up to 7.5 stops at the centre and 7.0 at the periphery under CIPA 2024 yaw, pitch and roll testing with RF 24-105mm F2.8L IS USM Z at 105 mm; Movie Digital IS is separate
Flash
Flash	External EL/EX Speedlite E-TTL II support; PC sync terminal and flash controls	External E-TTL II Speedlite support through the multi-function shoe; full-frame electronic-first-curtain sync 1/200 second, or 1/250 with supported Sync speed priority
Exposure controls
Exposure controls	P, 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	Auto, scenes, Fv, P, Tv, Av, M and Bulb; ±3 EV exposure compensation in 1/3 or 1/2 steps; 384-zone metering
Video
Highest video resolution
Highest video resolution	5472 × 2886 at 59.94 fps	3840 × 2160 at 59.94 fps
Video detail
Video detail	Internal 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 recording	UHD 3840 × 2160 up to 59.94/50 fps oversampled from 6K except cropped and smooth-skin modes; full-width recording with optional crop; Full HD up to 179.82/150 fps; internal H.265 or H.264 with 10-bit 4:2:2 options, Canon Log 3, PQ and HLG; normal clip limit up to six hours below 100 fps, subject to temperature, power and other limits
Audio
Audio	Built-in monaural microphone; stereo external microphone/line input and headphone sockets; adjustable levels, wind filter and attenuator	Built-in stereo microphone, 3.5 mm external microphone input and headphone output; compatible multi-function-shoe accessories support four-channel audio
Screen and viewfinder
Viewfinder
Viewfinder	Optical	Electronic
Screen size
Screen size	3.15″	3″
Screen dots
Screen dots	2,100,000	1,620,000
Touchscreen
Touchscreen	Yes	Yes
Tilting screen
Tilting screen	No	Yes
Display detail
Display detail	Fixed capacitive touchscreen; maker manual specifies 8.01 cm (3.15 inches), approximately 2.1 million dots; commonly marketed rounded as 3.2 inches	3-inch vari-angle Clear View LCD II touchscreen with approximately 1.62 million dots and 100% coverage
Viewfinder detail
Viewfinder detail	Optical eye-level pentaprism with approximately 100% coverage and 0.76× magnification with a 50 mm lens at infinity; built-in eyepiece shutter	0.39-inch OLED with approximately 2.36 million dots, 100% coverage, 0.70× magnification and refresh up to 120 fps; refresh may fall during focusing or shooting
Connections and design
Wi-Fi
Wi-Fi	Yes	Yes
Bluetooth
Bluetooth	Yes	Yes
Battery life (maker's claim)
Battery life (maker's claim)	2850 photographs	220 photographs
Body weight
Body weight	1250 g	499 g (better)
Release detail
Release detail	Canon Camera Museum records first marketing in February 2020; no exact first-sale day inferred	Canon USA announced on 15 September 2026 and expects body and RF 24-50mm kit availability in late October; Canon UK currently lists pre-order; no precise first-sale day inferred
Recording media
Recording media	Two CFexpress Type B memory-card slots; still/movie separation and recording/backup options	One SD, SDHC or SDXC slot with UHS-II and UHS-I support; maker recommends high-speed UHS-II SDXC for 4K video and fast bursts
Ports
Ports	USB-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 sync	USB-C 3.2 Gen 2 for transfer, power and charging; micro HDMI Type D, 3.5 mm microphone and headphone sockets, E3 remote terminal and multi-function shoe
Wireless connections
Wireless connections	Wi-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 geotagging	Wi-Fi 802.11ac at 2.4 or 5 GHz and Bluetooth 5.3; regional restrictions may apply
Battery life detail
Battery life detail	LP-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 testing	LP-E17 rechargeable lithium-ion battery; maker CIPA power-saving claim at 23°C approximately 220 photographs with EVF or 340 with LCD; accessories powered by the shoe can reduce endurance
Charging
Charging	–	USB charging supported with authenticated compatible batteries; optional LC-E17E external charger or PD-E1/PD-E2 USB power adapter; UK box list does not include a charger
Dimensions
Dimensions	Approximately 158.0 × 167.6 × 82.6 mm (width × height × depth)	Approximately 131.4 × 90.0 × 79.7 mm (width × height × depth)
Weight detail
Weight detail	Approximately 1250 g body only or 1440 g including battery and card; attached lens in official image is excluded	Approximately 499 g body only; 546 g including card and battery under CIPA guidelines
Materials
Materials	–	Primarily magnesium alloy with aluminium alloy and glass-fibre polycarbonate components; dust- and water-resistant construction is not waterproof, and shoe cover is required for sealing unless a sealed accessory is fitted
In the box
In the box	–	Camera body, ER-SC2 shoe cover, R-F-S camera cover, ER-100G neck strap, LP-E17 battery and cover, and user manual (UK maker list)