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Sony Alpha 7R III vs Sony Alpha 7R VI

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

Better figure, where one is clearly better

SonyAlpha 7R IIISonyAlpha 7R VI
Overview
ReleasedNovember 2017June 2026
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeBack-illuminated Exmor R CMOSBack-illuminated fully stacked Exmor RS CMOS
Sensor dimensions35.9 × 24 mm35.9 × 24 mm
Effective resolution42.4 MP66.8 MP
Largest image7952 × 53049984 × 6656
RAW recordingYesYes
Standard ISO range100–32000100–32000
Sensor detailApproximately 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.Approximately 72.6 million total pixels; effective resolution is up to 66.8 MP for stills and 55.8 MP for movies. Four- or 16-frame Pixel Shift Multi Shooting requires computer compositing; extended RAW processing modes are separate from the 9984 × 6656 normal still output.
Image formatsJPEG, 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.JPEG, HEIF, RAW, RAW+JPEG and RAW+HEIF; Sony ARW 6.0. Compressed HQ RAW available.
ISO detailStandard still-image ISO 100–32000; expanded ISO 50–102400.Standard still-image ISO 100–32000; expanded ISO 50–102400. Dynamic Active movie stabilisation limits movie ISO to 100–25600 in the exact Japanese specification.
Image processorBIONZ X and front-end LSI.BIONZ XR2 with integrated AI processing unit.
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst10 fps30 fps
AutofocusFast 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.Fast Hybrid AF with up to 759 phase-detection points for stills or movies and approximately 94% still-image area coverage. Recognition covers people, animals, birds, insects, cars, trains and aircraft; Auto subject recognition supported. AF-S sensitivity is EV −6 to 20 with F1.2 at ISO 100, or EV −11 to 20 in the specified Bright Monitoring mode.
ShutterFocal-plane shutter; 30 seconds to 1/8000 second plus Bulb; flash sync 1/250 second. Electronic first curtain and silent shooting supported.Mechanical and electronic shutters; exact Sony specifications list 30 seconds to 1/8000 second for stills, with Bulb for mechanical shooting. Flash sync 1/250 second full-frame or 1/320 second APS-C with compatible Sony flash; electronic first curtain supported.
Burst detailUp 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.Up to approximately 30 fps blackout-free electronic Hi+ with AF/AE tracking and up to 60 AF/AE calculations per second; mechanical Hi+ up to 10 fps. Maker buffer figures include 215 fine JPEG, 150 RAW or 65 compressed HQ RAW frames; card and recording conditions affect results. Pre-Capture and continuous-speed boost supported; lens compatibility affects maximum speed.
Stabilisation detailFive-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.Five-axis sensor shift; Sony claims 8.5 stops at the centre and 7.0 at the periphery under CIPA 2024 pitch/yaw/roll conditions with FE 50mm F1.2 GM and long-exposure noise reduction off. Dynamic Active video stabilisation narrows the field of view more than Active mode.
Video
Highest video resolution3840 × 2160 at 30 fps7680 × 4320 at 30 fps
Video detailJapanese 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.XAVC HS 8K at approximately 30p/25p/24p supports 10-bit 4:2:2 or 4:2:0. 8K oversamples from 8.2K and narrows the field of view. Full-frame 4K 60p is uncropped; uncropped 4K 120p requires 4K angle-of-view priority On. Dual Gain Shooting works only at 4K 30p or lower. Sony's 120-minute 8K claim uses 30p 200 Mbps 4:2:0 10-bit, temperature setting High, monitor open and 25°C ambient; it is not an unconditional recording limit.
AudioStereo microphone; 3.5 mm microphone and headphone sockets.Built-in stereo microphone and 3.5 mm microphone/headphone sockets. Optional XLR-A4 enables up to 96 kHz 32-bit float four-channel in-camera recording through the digital-audio Multi Interface Shoe; this is not an internal-microphone specification.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3.2″
Screen dots1,440,0002,095,104
TouchscreenYesYes
Tilting screenYesYes
Display detailTFT 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.Four-axis TFT LCD tilts approximately 98° up and 40° down, opens 180° sideways and rotates 270° in the open position; automatic vertical information display supported.
Viewfinder detail0.5-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.0.64-inch Quad-XGA OLED with 9,437,184 dots and approximately 0.90× magnification; 60/120 fps display. Sony specifies DCI-P3-equivalent gamut and 10-bit HDR display.
Connections and design
Wi-FiYesYes
Bluetooth–Yes
Battery life (maker's claim)650 photographs710 photographs
Body weight572 g622 g
Release detailSony 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.Sony UK specifies availability from June 2026; month precision is retained. Sony Japan separately specifies 5 June 2026 for ILCE-7RM6, which is not treated as the UK sale day.
Recording mediaTwo media slots; slot 1 supports UHS-II SD, while the other supports SD/Memory Stick. Simultaneous, relay and separate-media recording supported.Two multi-format slots, each accepting CFexpress 2 Type A or UHS-I/UHS-II SD media.
PortsUSB Type-C with SuperSpeed USB 3.1 Gen 1, Multi/Micro USB, Micro HDMI, microphone and headphone sockets, sync terminal and Multi Interface Shoe.Two USB Type-C ports; port 1 supports 10 Gbps USB 3.2, port 2 supports 480 Mbps USB 2.0. Full-size HDMI, microphone and headphone sockets, sync terminal and digital-audio Multi Interface Shoe; no Micro USB terminal.
Wireless connectionsWi-Fi IEEE 802.11b/g/n at 2.4 GHz and NFC.Wi-Fi IEEE 802.11a/b/g/n/ac/ax at 2.4/5/6 GHz and Bluetooth 5.3; no NFC in maker specifications.
Battery life detailNP-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.NP-SA100, 2670 mAh; CIPA approximately 710 photographs with LCD or 600 with viewfinder. USB Type-C Power Delivery charging and power supported; Sony Japan requires a 27 W or higher compatible supply/cable for the specified in-camera charging setup.
DimensionsApproximately 126.9 × 95.6 × 73.7 mm (width × height × maximum depth); grip-to-monitor depth 62.7 mm.Approximately 132.7 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.
Weight detailApproximately 572 g body only; 657 g with battery and memory card; lens excluded.Approximately 622 g body only; 713 g with battery and memory card; lens excluded.
MaterialsMagnesium-alloy body; dust- and moisture-resistant design does not guarantee protection against ingress.–
In the boxPower 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.NP-SA100 battery, BC-SAD1 charger, cable clamper, shoulder strap, body cap, accessory shoe cap and eyepiece cup, according to Sony UK.

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