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Canon EOS R6 Mark III vs Canon EOS R8 Mark II

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

Better figure, where one is clearly better

CanonEOS R6 Mark IIICanonEOS R8 Mark II
Overview
ReleasedNovember 2025Coming late October 2026
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSCMOS
Sensor dimensions35.9 × 23.9 mm36 × 24 mm
Effective resolution32.5 MP24.2 MP
Largest image6960 × 46406000 × 4000
RAW recordingYesYes
Standard ISO range100–64000100–102400
Sensor detailFull-frame 35.9 × 23.9 mm CMOS; approximately 32.5 million effective and 34.2 million total pixels; fixed low-pass filter and integrated cleaningFull-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 formatsJPEG, HEIF, RAW and C-RAW; native 6960 × 4640 still images; 12-bit RAW movie recording14-bit RAW, C-RAW and Dual Pixel RAW; 8-bit JPEG and 10-bit HEIF; simultaneous RAW and JPEG or HEIF
ISO detailStandard still-photo ISO 100–64000, expandable to ISO 50–102400; normal movie ISO 100–25600, with profile-dependent Canon Log and HDR rangesStandard still-photo ISO 100–102400, expandable to ISO 50 or 204800; normal movie ISO 100–25600, with expansion dependent on recording mode
Image processorDIGIC XDIGIC X
Lens and shooting
Lens mountCanon RFCanon RF
StabilisationSensor shiftSensor shift
Maximum continuous burst40 fps40 fps
Lens detailRF and RF-S lenses directly; EF/EF-S using EF-EOS R adapters; EF-M incompatible; RF-S/EF-S use approximately 1.6× cropCanon 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
AutofocusDual Pixel CMOS AF II; up to 6097 still or 4641 movie selectable AF positions; people, animal and vehicle recognition plus registered-person priority; available AF area depends on lensDual 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
ShutterMechanical and electronic first curtain 30–1/8000 second plus Bulb; electronic shutter 30–1/16000 second plus Bulb; available range varies with shooting modeElectronic 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 detailUp to 40 fps electronic or 12 fps mechanical/electronic first curtain; electronic maker buffer approximately 330 JPEG or 150 RAW on CFexpress, 330 JPEG or 140 RAW on SD; mechanical buffer 1000+ RAW on CFexpress or 400 RAW on SD; pre-continuous capture up to 20 earlier frames; results depend on Canon test conditions, lens, battery, card and settingsElectronic 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 detailFive-axis sensor-shift IBIS with coordinated optical lens stabilisation; up to 8.5 stops centre and 7.5 stops 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 separateFive-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
FlashExternal EL/EX Speedlite support; full-frame mechanical sync 1/200 second or electronic-first-curtain sync 1/250 second; higher crop-mode rates are separateExternal 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–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 resolution6960 × 4640 at 29.97 fps3840 × 2160 at 59.94 fps
Video detailHighest-resolution 3:2 RAW open gate 6960 × 4640 up to 29.97/25 fps; open-gate MP4 6912 × 4608; 17:9 Light RAW 6960 × 3672 up to 59.94/50 fps; 4K DCI/UHD up to 119.9/100 fps and Full HD up to 179.8/150 fps; oversampled 4K Fine up to 59.94/50 fps, with different sampling at higher rates; Canon Log 2/3, PQ/HLG and 10-bit 4:2:2 options; no built-in cooling fan (Photography Blog); normal clip ceiling six hours below 100 fps or two hours at 100 fps and above, subject to heat, power and other limitsUHD 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–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
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,600,0001,620,000
TouchscreenYesYes
Tilting screenYesYes
Display detail3-inch vari-angle touchscreen; UK maker rounds to approximately 1.6 million dots, Asian maker specifies 1.62 million dots3-inch vari-angle Clear View LCD II touchscreen with approximately 1.62 million dots and 100% coverage
Viewfinder detail0.5-inch OLED, approximately 3.69 million dots, 100% coverage, 0.76× magnification and refresh up to 120 fps0.39-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-FiYesYes
BluetoothYesYes
Battery life (maker's claim)390 photographs220 photographs
Body weight609 g499 g
Release detailMaker US announcement specifies November 2025 availability; Japanese maker confirms 21 November, while Photography Blog reports 20 November for its market; month retained across these regional launchesCanon 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 mediaOne CFexpress Type B slot up to 8 TB with CFexpress 2.0/VPG400 support; one UHS-II SD/SDHC/SDXC slotOne 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
PortsUSB-C 3.2 Gen 2, full-size HDMI Type A, external microphone and headphone sockets, E3 remote terminal and multi-function shoeUSB-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 connectionsWi-Fi 802.11ac at 2.4/5 GHz with Bluetooth 5.1; regional Wi-Fi restrictions may applyWi-Fi 802.11ac at 2.4 or 5 GHz and Bluetooth 5.3; regional restrictions may apply
Battery life detailLP-E6P; maker CIPA claim at 23°C approximately 390 photographs with EVF or 620 with LCD; LP-E6NH/LP-E6N disable functions including pre-continuous capture and HDMI RAW, and restrict networking, accessories and movie settings; LP-E6 incompatibleLP-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
ChargingCompatible USB PD power adapters; optional DR-E6P DC coupler requires PD-E2, and cannot pair with PD-E1USB 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
DimensionsApproximately 138.4 × 98.4 × 88.4 mm (width × height × depth)Approximately 131.4 × 90.0 × 79.7 mm (width × height × depth)
Weight detailApproximately 609 g body only; 699 g with card and batteryApproximately 499 g body only; 546 g including card and battery under CIPA guidelines
MaterialsMagnesium-alloy body and chassis with glass-fibre polycarbonate components; dust- and water-resistant construction is not waterproof; supplied shoe cover or compatible sealed accessory needed for sealingPrimarily 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–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)

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