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Canon EOS R6 Mark III vs Canon EOS R8

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

Better figure, where one is clearly better

CanonEOS R6 Mark IIICanonEOS R8
Overview
ReleasedNovember 2025April 2023
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSCMOS
Sensor dimensions35.9 × 23.9 mm35.9 × 23.9 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 cleaningApproximately 24.2 million effective and 25.6 million total pixels; 35.9 × 23.9 mm CMOS with fixed low-pass filter and integrated sensor cleaning
Image formatsJPEG, HEIF, RAW and C-RAW; native 6960 × 4640 still images; 12-bit RAW movie recordingRAW and C-RAW with 14-bit conversion using electronic first curtain or 12-bit using electronic shutter; 8-bit JPEG and 10-bit HEIF, with 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; movie sensitivity depends on frame rate and Canon Log or HDR settings
Image processorDIGIC XDIGIC X
Lens and shooting
Lens mountCanon RFCanon RF
StabilisationSensor shiftOptical lens stabilisation
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× cropRF and RF-S directly; EF and EF-S via EF-EOS R mount adapters; RF-S and EF-S use 1.6× cropping; EF-M incompatible
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 1053 automatic areas and 4897 selectable still-photo positions (4067 for movies); human, animal and vehicle recognition; AF area coverage depends on lens and 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 Tv or M and unavailable in H+; 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 settingsUp to 40 fps electronic or 6 fps electronic first curtain; UK maker buffer claim 120 JPEG, 56 RAW or 100 C-RAW at 40 fps; 30 fps RAW Burst mode with up to 0.5 second pre-capture is separate; lens, exposure, lighting and subject conditions affect speed, and electronic rolling-shutter distortion is possible
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 separateNo sensor-shift IBIS; optical stabilisation depends on the attached lens; Movie Digital IS is available separately
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 EX/EL Speedlite support through the multi-function shoe; electronic-first-curtain sync 1/200 second
Exposure controls–Scene Intelligent Auto, Fv, P, Tv, Av, M, Bulb and two custom modes; 384-zone evaluative, partial, centre spot and centre-weighted metering; ±3 EV compensation
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 limitsFull-width UHD 3840 × 2160 up to 59.94/50 fps oversampled from 6K; optional cropped mode uses 62% of the horizontal area; Full HD up to 179.82/150 fps slow motion without sound; internal 8-bit 4:2:0 or 10-bit 4:2:2, Canon Log 3 and HDR PQ; normal clip limit two hours, subject to temperature, with maker approximately 30 minutes 4K 59.94p starting at 23°C
Audio–Built-in stereo microphone; 3.5 mm external microphone and headphone sockets
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 dotsVari-angle 3-inch Clear View LCD II capacitive 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, approximately 2.36 million dots, 100% coverage and 0.70× magnification; display refresh approximately 60 or 120 fps with mode- and shooting-dependent reductions
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)390 photographs220 photographs
Body weight609 g414 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 Camera Museum records first marketing in April 2023; no exact 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 slotSingle SD, SDHC or SDXC slot with UHS-II support; high-speed UHS-II recommended for 4K 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, 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 802.11b/g/n at 2.4 GHz and Bluetooth Low Energy 4.2; 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; maker CIPA power-saving claim at 23°C approximately 220 photographs with EVF or 370 with LCD
ChargingCompatible USB PD power adapters; optional DR-E6P DC coupler requires PD-E2, and cannot pair with PD-E1Supplied LC-E17E external charger; USB charging supported with authenticated batteries, using compatible power equipment
DimensionsApproximately 138.4 × 98.4 × 88.4 mm (width × height × depth)Approximately 132.5 × 86.1 × 70.0 mm (width × height × depth)
Weight detailApproximately 609 g body only; 699 g with card and batteryApproximately 414 g body only or 461 g with battery and card 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; maker describes dust- and water-resistant construction with covers closed, but not waterproof

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