Sony Alpha 7R II vs Sony Alpha 7R III

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

Better figure, where one is clearly better

Alpha 7R II compared with Alpha 7R III
SonyAlpha 7R IISonyAlpha 7R III
Overview
ReleasedAugust 2015November 2017
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeBack-illuminated Exmor R CMOSBack-illuminated Exmor R CMOS
Sensor dimensions35.9 × 24 mm35.9 × 24 mm
Effective resolution42.4 MP42.4 MP
Largest image7952 × 53047952 × 5304
RAW recordingYesYes
Standard ISO range100–25600100–32000
Sensor detailApproximately 43.6 million total pixels; 3:2 back-illuminated 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. Current maker specifications include uncompressed RAW and 14-bit output.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 still-image ISO 100–25600; expanded ISO 50–102400. Multi Shot NR combines images separately from single-image sensitivity.Standard still-image ISO 100–32000; expanded ISO 50–102400.
Image processor–BIONZ X and front-end LSI.
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst5 fps10 fps
AutofocusFast Hybrid AF with 399 full-frame phase-detection points and 25 contrast points; 357 phase points in APS-C mode. Eye AF and continuous AF supported.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 1/250 second. Electronic first curtain and silent shooting supported.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 5 fps in Continuous Hi with AF tracking, as Sony's launch announcement specifies; approximately 2.5 fps in Lo. Maker buffers include 23 compressed RAW or nine uncompressed RAW frames; speed depends on conditions.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 detailFive-axis sensor shift; Sony claims 4.5 stops under CIPA pitch/yaw conditions with Sonnar T* FE 55mm F1.8 ZA and long-exposure noise reduction off. Correction depends on lens compatibility.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 resolution3840 × 2160 at 30 fps3840 × 2160 at 30 fps
Video detailJapanese specification lists XAVC S 4K at 30p or 24p and up to 100 Mbps; headline maximum reflects the Japanese/NTSC mode. Full-pixel readout without binning applies to Super 35mm 4K, not every full-frame recording mode. S-Log2; 8-bit 4:2:2 HDMI output. Full HD 60p and HD 720p120 are separate lower-resolution modes.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.
AudioStereo 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 dots1,228,8001,440,000
TouchscreenNoYes
Tilting screenYesYes
Display detailTFT LCD tilts approximately 107° up and 41° down; no touchscreen.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 electronic viewfinder with 2,359,296 dots, 100% coverage and approximately 0.78× 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 weight582 g572 g (better)
Release detailSony Japan specifies 7 August 2015 for the ILCE-7RM2 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 mediaSingle slot supports SD, SDHC and SDXC including UHS-I, plus compatible Memory Stick formats.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 IEEE 802.11b/g/n at 2.4 GHz 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 290 using the viewfinder. In-camera charging and USB power supported.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 × 95.7 × 60.3 mm (width × height × depth, grip to monitor).Approximately 126.9 × 95.6 × 73.7 mm (width × height × maximum depth); grip-to-monitor depth 62.7 mm.
Weight detailApproximately 582 g body only; 625 g with battery and memory card; 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 boxTwo NP-FW50 batteries, strap, cable protector, AC-UUD11 adaptor, BC-VW1 battery charger and Micro USB cable, 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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