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Sony Alpha 7 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 7 IIISonyAlpha 7R VI
Overview
ReleasedMarch 2018June 2026
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeBack-illuminated Exmor R CMOSBack-illuminated fully stacked Exmor RS CMOS
Sensor dimensions35.6 × 23.8 mm35.9 × 24 mm
Effective resolution24.2 MP66.8 MP
Largest image6000 × 40009984 × 6656
RAW recordingYesYes
Standard ISO range100–51200100–32000
Sensor detailApproximately 25.3 million total pixels; 3:2 back-illuminated sensor.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 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.JPEG, HEIF, RAW, RAW+JPEG and RAW+HEIF; Sony ARW 6.0. Compressed HQ RAW available.
ISO detailStandard still-image ISO 100–51200; expanded ISO 50–204800. Video ISO 100–51200 expands up to ISO 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 with 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 693 phase-detection and 425 contrast-detection points; phase-detection covers approximately 93% of the image area. Eye AF supports continuous AF.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; electronic first curtain and silent electronic shooting.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 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.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 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.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/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.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.
AudioBuilt-in stereo 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 dots921,6002,095,104
TouchscreenYesYes
Tilting screenYesYes
Display detailTFT screen tilts approximately 107° up and 41° down; touch focus is supported. Dots count colour subpixels.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; 2,359,296 dots; 100% coverage and approximately 0.78× magnification with a 50 mm lens at infinity.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
BluetoothYesYes
Battery life (maker's claim)710 photographs710 photographs
Body weight565 g622 g
Release detailSony 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.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 card slots; slot 1 supports UHS-I and UHS-II SD cards, while slot 2 supports UHS-I SD and compatible Memory Stick media.Two multi-format slots, each accepting CFexpress 2 Type A or UHS-I/UHS-II SD media.
PortsUSB-C with USB 3.1 Gen 1, Multi/Micro USB, Micro HDMI, microphone and headphone sockets 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, Bluetooth 4.1 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; approximately 710 photographs with the monitor or 610 with the viewfinder under CIPA conditions.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.
ChargingUSB-C or Multi/Micro USB charging and power supply.–
DimensionsApproximately 126.9 × 95.6 × 73.7 mm maximum (width × height × depth); Sony also gives 62.7 mm from grip to monitor.Approximately 132.7 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.
Weight detailApproximately 565 g body only; 650 g including battery and memory card; lens excluded.Approximately 622 g body only; 713 g with battery and memory card; lens excluded.
In the boxNP-FZ100 battery, AC adaptor AC-UUD12, shoulder strap, body cap, accessory shoe cap, eyepiece cup and Micro USB 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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