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Canon EOS R3 vs Sony Alpha 7R IVA

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

Better figure, where one is clearly better

CanonEOS R3SonyAlpha 7R IVA
Overview
ReleasedNovember 2021June 2021
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeBack-illuminated stacked CMOSBack-illuminated Exmor R CMOS
Sensor dimensions36 × 24 mm35.7 × 23.8 mm
Effective resolution24.1 MP61 MP
Largest image6000 × 40009504 × 6336
RAW recordingYesYes
Standard ISO range100–102400100–32000
Sensor detailApproximately 24.1 million effective and 26.7 million total pixels; full-frame back-illuminated stacked CMOS, approximately 36 × 24 mm in the maker's technical guideApproximately 62.5 million total pixels; 3:2 sensor. Four- or 16-frame Pixel Shift Multi Shooting requires computer compositing and a stationary camera and subject.
Image formatsJPEG, HEIF, RAW and C-RAW; CR3 still RAW and CRM movie RAW filesJPEG, RAW and RAW+JPEG; Sony ARW 2.3 compressed or uncompressed RAW.
ISO detailStandard still-photo ISO 100–102400, expandable to ISO 50 or 204800; normal movie ISO 100–25600, or ISO 800–25600 with Canon Log 3Standard still-image ISO 100–32000; expanded ISO 50–102400.
Image processorDIGIC XBIONZ X and front-end LSI.
Lens and shooting
Lens mountCanon RFSony E-mount
StabilisationLens and sensor shiftSensor shift
Maximum continuous burst30 fps10 fps
Lens detailCanon RF lenses; EF/EF-S lenses via EF-EOS R adapter, excluding EF-M; EF-S lenses use approximately 1.6× crop–
AutofocusDual Pixel CMOS AF II with people, dogs, cats, birds and motorsport vehicle recognition; up to 4779 manually selected still-photo positions; −7.5 EV still-photo claim with f/1.2 non-DS lens, centre point, One-Shot AF, ISO 100 and room temperature. Eye-control selection is for stills only, requires calibration and may be affected by eyewear, individual eyes and shooting conditionsFast Hybrid AF with 567 full-frame phase-detection points and 425 contrast points; phase points cover approximately 74% of the image. Real-time tracking and human/animal Eye AF for stills; human Eye AF in movies. APS-C point counts differ.
ShutterMechanical and electronic first curtain up to 1/8000 second; electronic up to 1/64000 second in Tv/M with restrictions; Bulb supported–
Burst detailNormal full-resolution continuous shooting up to 30 fps electronic with AF/AE tracking or 12 fps mechanical/electronic first curtain, depending on lens, battery and settings. Separate custom high-speed mode in firmware 1.2.0 or later reaches 195 fps for up to 50 frames; maker drive-mode manual fixes shutter speed, aperture and ISO from the first shot, and Amateur Photographer reports fixed AF/AE in this brief burstUp to approximately 10 fps mechanical Hi+ with AF/AE tracking; approximately 8 fps in Hi with live view. Sony's exact IVA feature page lists approximately 7 fps silent electronic Hi+. Maker buffer claim is 68 compressed RAW or 30 uncompressed RAW frames; conditions and memory cards affect results.
Stabilisation detailFive-axis in-body image stabilisation coordinated with compatible lens optical IS; Canon UK claims up to eight stops with specific RF lenses, not every lensFive-axis sensor shift; Sony claims 5.5 stops under CIPA pitch/yaw conditions with Planar T* FE 50mm F1.4 ZA and long-exposure noise reduction off.
FlashMulti-function accessory shoe; mechanical flash sync 1/200 second, electronic first curtain 1/250 second and electronic shutter 1/180 second–
Video
Highest video resolution6000 × 3164 at 59.94 fps3840 × 2160 at 30 fps
Video detailInternal 6K RAW 6000×3164 up to 59.94/50 fps on CFexpress; oversampled uncropped DCI/UHD 4K up to 59.94/50 fps; 4K high-frame-rate 119.88/100 fps; Canon Log 3 and HDR PQ. RAW, 4K high-frame-rate and 4K60 ALL-I are not recordable to SD cardsJapanese specification lists XAVC S 4K at 30p or 24p and up to 100 Mbps; headline maximum reflects Japanese/NTSC mode. Super 35mm uses full-pixel readout without binning with a narrower field of view; full-frame 4K is a separate mode. HLG, S-Log2 and S-Log3; 8-bit 4:2:2 HDMI output. Full HD 120p is a lower-resolution mode.
AudioBuilt-in monaural microphone; 3.5 mm stereo microphone and headphone sockets, plus compatible multi-function-shoe audio accessoriesStereo microphone; 3.5 mm microphone and headphone sockets. Multi Interface Shoe supports digital audio with compatible accessories.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3.2″3″
Screen dots4,150,0002,359,296
TouchscreenYesYes
Tilting screenYesYes
Display detailFully articulated 3.2-inch capacitive touchscreen; technical guide specifies approximately 4.15 million dots, while the UK store rounds this to 4.2 million; approximately 100% coverageTFT LCD tilts approximately 107° up and 41° down; touch focus and touchpad operation. ILCE-7RM4A uses 2,359,296 dots, compared with 1,440,000 on the original ILCE-7RM4. Sony confirms the display change affects battery ratings without changing body dimensions or weight.
Viewfinder detail0.5-inch OLED EVF, approximately 5.76 million dots, 100% coverage and 0.76× magnification with 50 mm lens at infinity0.5-inch electronic viewfinder with 5,760,000 dots, 100% coverage and approximately 0.78× magnification; selectable 60/120 fps display.
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)620 photographs660 photographs
Body weight822 g580 g
Release detailCanon Camera Museum records marketing in November 2021; no exact first-sale day is inferredSony Japan's product-registration list specifies June 2021 for ILCE-7RM4A; this is the Japanese on-sale month, not a UK release claim. No manufacturer day was found.
Recording mediaOne CFexpress Type B slot and one SD/SDHC/SDXC UHS-II slot; recording to both is limited by the slower cardTwo SD/SDHC/SDXC slots, both supporting UHS-II; simultaneous, relay and separate-media recording.
PortsUSB-C 3.2 Gen 2, micro HDMI Type D, RJ45 Ethernet, 3.5 mm microphone/headphone sockets and N3 remote-control terminalUSB Type-C, Multi/Micro USB, Micro HDMI, microphone and headphone sockets, sync terminal and Multi Interface Shoe.
Wireless connectionsWi-Fi 802.11a/b/g/n/ac at 2.4/5 GHz with regional frequency restrictions; Bluetooth Low Energy 5.0; built-in GPS, GLONASS and MICHIBIKI positioningWi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz, NFC and Bluetooth 4.1 smartphone connection.
Battery life detailLP-E19; CIPA power-saving approximately 620 EVF or 860 screen shots at 23°C using an SD card; smooth-display approximately 440/760 shots under the same maker conditionsNP-FZ100; CIPA approximately 660 photographs with LCD or 530 with viewfinder; USB charging and power supported.
ChargingIn-camera charging with optional USB Power Adapter PD-E1; this adapter does not power the camera while operating; AC-E19 and DR-E19 provide optional AC power–
DimensionsApproximately 150 × 142.6 × 87.2 mm (width × height × depth)Approximately 128.9 × 96.4 × 77.5 mm (width × height × maximum depth); grip-to-monitor depth 67.3 mm.
Weight detailApproximately 822 g body only, excluding body cap, eyecup and multi-function-shoe cover; approximately 1015 g including battery and CFexpress card; photographed kit lens excludedApproximately 580 g body only; 665 g with battery and memory card; lens excluded.
MaterialsMagnesium-alloy body with dust- and moisture-resistant construction; resistance is not an underwater rating–
In the boxUK body package includes LP-E19 battery, LC-E19 charger and AC cable, R-F-5 body cap, ER-h small eyecup, IFC-100U interface cable/protector, ER-L1 strap and accessory-shoe coverPower cord, NP-FZ100 battery, cable protector, BC-QZ1 charger, shoulder strap, body cap, accessory shoe cap, eyepiece cup and USB Type-C cable, according to Sony Japan.

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