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Sony Alpha 7R vs Sony Alpha 7R III

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

Better figure, where one is clearly better

SonyAlpha 7RSonyAlpha 7R III
Overview
ReleasedNovember 2013November 2017
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeExmor CMOSBack-illuminated Exmor R CMOS
Sensor dimensions35.9 × 24 mm35.9 × 24 mm
Effective resolution36.4 MP42.4 MP
Largest image7360 × 49127952 × 5304
RAW recordingYesYes
Standard ISO range100–25600100–32000
Sensor detailApproximately 36.8 million total pixels; 3:2 sensor without an optical low-pass filter.Approximately 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, RAW and RAW+JPEG; Sony ARW 2.3.JPEG, 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 single-image still ISO 100–25600; expanded ISO 50. Multi Frame NR reaches ISO 51200 by combining images.Standard still-image ISO 100–32000; expanded ISO 50–102400.
Image processorBIONZ X.BIONZ X and front-end LSI.
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationOptical lens stabilisationSensor shift
Maximum continuous burst4 fps10 fps
AutofocusContrast-detection autofocus with 25 points; single AF, continuous AF, direct manual focus and manual focus. No on-sensor phase-detection points.Fast 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.
ShutterFocal-plane shutter; 30 seconds to 1/8000 second plus Bulb; flash sync 1/160 second. The Japanese specification lists no electronic first curtain.Focal-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 approximately 4 fps in Speed Priority Continuous and 1.5 fps in normal continuous shooting. Sony's exact help guide says Speed Priority locks focus for subsequent frames; exposure may continue adjusting depending on AEL settings.Up 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 sensor-shift stabilisation; optical correction depends on a compatible stabilised lens.Five-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.
Video
Highest video resolution1920 × 1080 at 60 fps3840 × 2160 at 30 fps
Video detailJapanese specification lists AVCHD Full HD 60p at approximately 28 Mbps, plus 60i and 24p. The headline maximum reflects the Japanese/NTSC mode; PAL-region modes include 50p. HDMI 4K still-photo playback does not mean 4K movie recording.Japanese 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 microphone; 3.5 mm microphone and headphone sockets.Stereo microphone; 3.5 mm microphone and headphone sockets.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots921,6001,440,000
TouchscreenNoYes
Tilting screenYesYes
Display detailTFT LCD tilts approximately 90° up and 45° down; no touchscreen according to Sony Japan's exact specification.TFT 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 detail0.5-inch OLED electronic viewfinder; 2,359,296 dots, 100% coverage and approximately 0.71× magnification with a 50 mm lens at infinity.0.5-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
Battery life (maker's claim)340 photographs650 photographs
Body weight407 g572 g
Release detailSony Japan specifies 15 November 2013 for the ILCE-7R body; this is the Japanese sale date, not a UK release claim.Sony 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 mediaSD, SDHC and SDXC including UHS-I; Memory Stick PRO Duo and PRO-HG Duo.Two media slots; slot 1 supports UHS-II SD, while the other supports SD/Memory Stick. Simultaneous, relay and separate-media recording supported.
PortsMulti/Micro USB, Micro HDMI, microphone and headphone sockets and Multi Interface Shoe.USB 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 and NFC.Wi-Fi IEEE 802.11b/g/n at 2.4 GHz and NFC.
Battery life detailNP-FW50; CIPA approximately 340 photographs using the LCD or 270 using the viewfinder; in-camera USB charging.NP-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.
DimensionsApproximately 126.9 × 94.4 × 54.8 mm (width × height × maximum depth, including grip to viewfinder); grip-to-monitor depth 48.2 mm.Approximately 126.9 × 95.6 × 73.7 mm (width × height × maximum depth); grip-to-monitor depth 62.7 mm.
Weight detailApproximately 407 g body only; 465 g with battery and Memory Stick PRO Duo; lens excluded.Approximately 572 g body only; 657 g with battery and memory card; lens excluded.
Materials–Magnesium-alloy body; dust- and moisture-resistant design does not guarantee protection against ingress.
In the boxNP-FW50 battery, AC-UB10 adaptor, shoulder strap, Micro USB cable, body cap, accessory shoe cap and eyepiece cup, according to Sony Japan.Power 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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