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Canon EOS RP vs Sony Alpha 7 III

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

Better figure, where one is clearly better

CanonEOS RPSonyAlpha 7 III
Overview
ReleasedMarch 2019March 2018
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSBack-illuminated Exmor R CMOS
Sensor dimensions35.9 × 24 mm35.6 × 23.8 mm
Effective resolution26.2 MP24.2 MP
Largest image6240 × 41606000 × 4000
RAW recordingYesYes
Standard ISO range100–40000100–51200
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 25.3 million total pixels; 3:2 back-illuminated sensor.
Image formatsJPEG, 14-bit RAW and C-RAW in CR3 format; simultaneous RAW+JPEG and in-camera RAW processingJPEG and Sony ARW 2.3 RAW, including uncompressed RAW. Sony's announcement limits compressed RAW continuous shooting to 12 bits; 14-bit output is not universal in every mode.
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 100–51200; expanded ISO 50–204800. Video ISO 100–51200 expands up to ISO 102400.
Image processorDIGIC 8BIONZ X with 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 693 phase-detection and 425 contrast-detection points; phase-detection covers approximately 93% of the image area. Eye AF supports continuous AF.
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; electronic first curtain and silent electronic shooting.
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 shooting; approximately 8 fps in Hi with live view. Maximum speed depends on settings and lens compatibility. Silent shooting can distort moving subjects. Sony gives buffers of approximately 177 standard JPEG, 89 compressed RAW or 40 uncompressed RAW images under its UHS-II SDXC test conditions.
Stabilisation detailNo in-body sensor-shift stabilisation; compatible lens optical IS and Movie Digital IS supportedFive-axis image-sensor shift; Sony claims 5 stops under CIPA conditions for pitch/yaw with Planar T* FE 50mm F1.4 ZA and long-exposure noise reduction off. Correction depends on the lens.
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/NTSC XAVC S 4K at 30p or 24p, approximately 100 or 60 Mbps; the UK PAL specification lists 25p. Full HD reaches 120p in NTSC modes. S-Log2, S-Log3 and HLG supported. Sony specifies different sensor readout at 24p and 30p; PhotographyBlog reports a 1.2× crop at 30p. Continuous recording is limited to approximately 29 minutes.
AudioBuilt-in stereo microphones, 3.5 mm stereo microphone input and headphone output with adjustable volumeBuilt-in stereo microphone; 3.5 mm microphone and headphone sockets.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,040,000921,600
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 screen tilts approximately 107° up and 41° down; touch focus is supported. Dots count colour subpixels.
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; 2,359,296 dots; 100% coverage and approximately 0.78× magnification with a 50 mm lens at infinity.
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)250 photographs710 photographs
Body weight440 g565 g
Release detailCanon Camera Museum records March 2019 marketing; no exact first-sale day inferredSony Japan specifies 23 March 2018 for the ILCE-7M3 body and ILCE-7M3K kit, following its 27 February announcement; this is the Japanese sale date, not a UK release claim.
Recording mediaOne SD/SDHC/SDXC UHS-II/UHS-I slot shared with the battery compartmentTwo card slots; slot 1 supports UHS-I and UHS-II SD cards, while slot 2 supports UHS-I SD and compatible Memory Stick media.
PortsUSB-C Hi-Speed USB 2.0, mini HDMI Type C, 3.5 mm microphone and headphone sockets, and RS-60E3 remote-release terminalUSB-C with USB 3.1 Gen 1, Multi/Micro USB, Micro HDMI, microphone and headphone sockets 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, Bluetooth 4.1 and NFC.
Battery life detailOne LP-E17; approximately 250 shots at 23°C or 240 at 0°C under maker/CIPA testing conditionsNP-FZ100; approximately 710 photographs with the monitor or 610 with the viewfinder under CIPA conditions.
ChargingSupplied external LC-E17E charger; compatible PD-E1 enables in-camera USB charging; household AC power requires separate accessoriesUSB-C or Multi/Micro USB charging and power supply.
DimensionsApproximately 132.5 × 85 × 70 mm (width × height × depth)Approximately 126.9 × 95.6 × 73.7 mm maximum (width × height × depth); Sony also gives 62.7 mm from grip to monitor.
Weight detailApproximately 440 g body only or 485 g with battery/card; photographed kit lens and optional 86 g EG-E1 extension grip excludedApproximately 565 g body only; 650 g including battery and memory card; lens excluded.
MaterialsMagnesium-alloy chassis with plastic exterior and dust/splash protection described by Amateur Photographer; no water-resistance rating inferred–
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 kitNP-FZ100 battery, AC adaptor AC-UUD12, shoulder strap, body cap, accessory shoe cap, eyepiece cup and Micro USB cable, according to Sony Japan.

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