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Canon EOS RP vs Sony Alpha 7R III

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

Better figure, where one is clearly better

CanonEOS RPSonyAlpha 7R III
Overview
ReleasedMarch 2019November 2017
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSBack-illuminated Exmor R CMOS
Sensor dimensions35.9 × 24 mm35.9 × 24 mm
Effective resolution26.2 MP42.4 MP
Largest image6240 × 41607952 × 5304
RAW recordingYesYes
Standard ISO range100–40000100–32000
Sensor detailApproximately 26.2 million effective and 27.1 million total pixels; 35.9 × 24 mm CMOS sensor with automatic dust removal and Dust Delete DataApproximately 43.6 million total pixels; 3:2 back-illuminated sensor without an optical low-pass filter. Pixel Shift Multi Shooting combines four exposures into a 7952 × 5304 output, not a higher pixel-count still image; requires a static camera/subject and computer processing.
Image formatsJPEG, 14-bit RAW and C-RAW in CR3 format; simultaneous RAW+JPEG and in-camera RAW processingJPEG, RAW and RAW+JPEG; Sony ARW 2.3, compressed or uncompressed RAW. Maker launch footnote limits compressed RAW continuous shooting, Bulb and long-exposure noise reduction to 12-bit output; other supported modes allow 14-bit.
ISO detailStandard still-photo ISO 100–40000, expandable to ISO 50–102400; manual 4K movie ISO 100–12800 or Full HD/HD ISO 100–25600, with expansionStandard still-image ISO 100–32000; expanded ISO 50–102400.
Image processorDIGIC 8BIONZ X and front-end LSI.
Lens and shooting
Lens mountCanon RFSony E-mount
StabilisationOptical lens stabilisationSensor shift
Maximum continuous burst5 fps10 fps
Lens detailNative RF and adapted EF/EF-S lenses, excluding EF-M; EF-S lenses use approximately 1.6× crop and 10.2 MP output (Amateur Photographer)–
AutofocusDual Pixel CMOS AF for stills and Full HD, contrast AF for 4K; up to 4779 selectable positions or 143 automatic areas; human face/eye detection with Servo AF; maker −5 EV claim at centre point, f/1.2 non-DS lens, ISO 100, One-Shot AF and room temperatureFast Hybrid AF with 399 full-frame phase-detection points and 425 contrast points; Eye AF supported. Phase-point coverage differs with APS-C lenses and crop modes.
ShutterElectronically controlled focal-plane shutter, 30–1/4000 second plus Bulb; electronic silent shooting restricted to an automatic scene modeFocal-plane shutter; 30 seconds to 1/8000 second plus Bulb; flash sync 1/250 second. Electronic first curtain and silent shooting supported.
Burst detailUp to 5 fps with fixed focus or 4 fps with Servo AF; maker ISO 100 full-frame high-speed test gives 50 RAW or 42 RAW+JPEG on a 32 GB UHS-I card, versus card-full RAW or 98 RAW+JPEG on its 32 GB UHS-II test card; speed depends on settings and conditionsUp to approximately 10 fps in Hi+ with AF/AE tracking using mechanical or silent shutter; up to approximately 8 fps with live view in Hi. Maker buffer claims 76 compressed RAW/JPEG or 28 uncompressed RAW frames under Sony test conditions with UHS-II SDXC; actual speed depends on settings and lens compatibility.
Stabilisation detailNo in-body sensor-shift stabilisation; compatible lens optical IS and Movie Digital IS supportedFive-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. Correction depends on lens compatibility.
FlashNo built-in flash; compatible EL/EX Speedlites, E-TTL II metering and 1/180-second sync; no PC sync terminal–
Exposure controlsP/Tv/Av/M/Fv, Bulb and C1/C2/C3 modes; 384-zone metering and ±3 EV exposure compensation–
Video
Highest video resolution3840 × 2160 at 25 fps3840 × 2160 at 30 fps
Video detailInternal UHD 3840×2160 at 25/23.98 fps with a central crop and contrast AF; Full HD up to 59.94 fps with Dual Pixel AF; H.264 MP4, 8-bit recording, no Canon Log (Photography Blog); Movie Digital IS adds cropping. Separate 4K/Full HD time-lapse modesJapanese specification lists XAVC S 4K at 30p or 24p and up to 100 Mbps; headline maximum reflects Japanese/NTSC mode. Super 35mm recording provides full-pixel readout without binning; 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 stereo microphones, 3.5 mm stereo microphone input and headphone output with adjustable volumeStereo microphone; 3.5 mm microphone and headphone sockets.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,040,0001,440,000
TouchscreenYesYes
Tilting screenYesYes
Display detail3-inch vari-angle capacitive touchscreen, approximately 1.04 million dots and 100% coverage; opens 175°, rotates 90° forward or 180° backwardTFT LCD tilts approximately 107° up and 41° down; touch focus/touchpad operation supported. This is the original ILCE-7RM3's 1,440,000-dot panel, not the later ILCE-7RM3A display.
Viewfinder detail0.39-inch OLED EVF with approximately 2.36 million dots, 100% coverage and 0.70× magnification with 50 mm lens at infinity, −1 dioptre0.5-inch electronic viewfinder with 3,686,400 dots, 100% coverage and approximately 0.78× magnification with a 50 mm lens at infinity; selectable 60/120 fps display.
Connections and design
Wi-FiYesYes
BluetoothYes–
Battery life (maker's claim)250 photographs650 photographs
Body weight440 g572 g
Release detailCanon Camera Museum records March 2019 marketing; no exact first-sale day inferredSony Japan specifies 25 November 2017 for the ILCE-7RM3 body; this is the Japanese sale date, not a UK release claim. Reservations began earlier and are not the release date.
Recording mediaOne SD/SDHC/SDXC UHS-II/UHS-I slot shared with the battery compartmentTwo media slots; slot 1 supports UHS-II SD, while the other supports SD/Memory Stick. Simultaneous, relay and separate-media recording supported.
PortsUSB-C Hi-Speed USB 2.0, mini HDMI Type C, 3.5 mm microphone and headphone sockets, and RS-60E3 remote-release terminalUSB Type-C with SuperSpeed USB 3.1 Gen 1, Multi/Micro USB, Micro HDMI, microphone and headphone sockets, sync terminal and Multi Interface Shoe.
Wireless connectionsWi-Fi 802.11b/g/n at 2.4 GHz and Bluetooth Low Energy 4.1; BR-E1 wireless remote supported; current UK page says optional security firmware disables image.canon uploads and YouTube livestreaming via image.canonWi-Fi IEEE 802.11b/g/n at 2.4 GHz and NFC.
Battery life detailOne LP-E17; approximately 250 shots at 23°C or 240 at 0°C under maker/CIPA testing conditionsNP-FZ100; CIPA approximately 650 photographs using the LCD or 530 using the viewfinder. In-camera charging and power via USB Type-C or Multi/Micro USB.
ChargingSupplied external LC-E17E charger; compatible PD-E1 enables in-camera USB charging; household AC power requires separate accessories–
DimensionsApproximately 132.5 × 85 × 70 mm (width × height × depth)Approximately 126.9 × 95.6 × 73.7 mm (width × height × maximum depth); grip-to-monitor depth 62.7 mm.
Weight detailApproximately 440 g body only or 485 g with battery/card; photographed kit lens and optional 86 g EG-E1 extension grip excludedApproximately 572 g body only; 657 g with battery and memory card; lens excluded.
MaterialsMagnesium-alloy chassis with plastic exterior and dust/splash protection described by Amateur Photographer; no water-resistance rating inferredMagnesium-alloy body; dust- and moisture-resistant design does not guarantee protection against ingress.
In the boxUK maker lists body, R-F-5 camera cover, neck strap, LC-E17E charger, LP-E17 battery, AC cable and user manual kit; lens/adapter depend on kitPower 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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