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Sony Alpha 7 IV 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 IVSonyAlpha 7R VI
Overview
ReleasedNovember 2021June 2026
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeExmor R back-illuminated CMOSBack-illuminated fully stacked Exmor RS CMOS
Sensor dimensions35.9 × 23.9 mm35.9 × 24 mm
Effective resolution33 MP66.8 MP
Largest image7008 × 46729984 × 6656
RAW recordingYesYes
Standard ISO range100–51200100–32000
Sensor detailApproximately 34.1 million total pixels; 3:2 full-frame sensorApproximately 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, HEIF and 14-bit RAW; compressed, lossless compressed and uncompressed RAW optionsJPEG, 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. Movie ISO 100–51200, expandable to 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 XRBIONZ XR2 with integrated AI processing unit.
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst10 fps30 fps
Lens detailInterchangeable E-mount; body figures exclude lenses. ILCE-7M4K kit includes FE 28–70mm F3.5–5.6 OSS.–
AutofocusFast Hybrid AF with 759 phase-detection and 425 contrast-detection points in full-frame mode; Eye AF recognises humans, animals and birds in stills and moviesFast 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.
ShutterMechanical or electronic shutter; 1/8000 second to 30 seconds plus Bulb; full-frame flash sync 1/250 secondMechanical 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 detailHi+ up to 10 fps, Hi 8 fps, Mid 6 fps and Lo 3 fps. Photography Blog and TechRadar report JPEG/compressed RAW are needed for 10 fps; uncompressed or lossless RAW slows to approximately 5–6 fps. Speed and buffer depend on shooting conditions and card.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; maker claims 5.5 stops under CIPA pitch/yaw conditions with Planar T* FE 50mm F1.4 ZA. Active movie stabilisation adds a crop.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 60 fps7680 × 4320 at 30 fps
Video detailInternal 4K up to 60p, including 10-bit 4:2:2; 60p/50p uses APS-C/Super 35 rather than full-frame readout. Full-frame 4K 30p uses 7K oversampling. Full HD up to 120p; S-Log3, HLG and S-Cinetone. USB streaming tops out at 4K 15p or Full HD 60p, separately from internal recording.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.
Audio–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 dots1,036,8002,095,104
TouchscreenYesYes
Tilting screenYesYes
Display detailSide-opening vari-angle touchscreen, approximately 176° opening and 270° rotation; dots are not image pixelsFour-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-type OLED; 3,686,400 dots; 100% coverage; approximately 0.78× magnification; 60 or 120 fps display0.64-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)580 photographs710 photographs
Body weight573 g622 g
Release detailSony Hong Kong states 25 November 2021 availability; the UK announcement gives December 2021. Announced on 21 October 2021. This is ILCE-7M4, not the Alpha 7R IV or Alpha 7S III.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 mediaSlot 1 accepts CFexpress Type A or UHS-I/II SD cards; slot 2 accepts UHS-I/II SD cardsTwo multi-format slots, each accepting CFexpress 2 Type A or UHS-I/UHS-II SD media.
PortsFull-size HDMI Type A; USB-C 10Gbps with Power Delivery; Multi/Micro USB; 3.5 mm microphone and headphone sockets; Multi Interface Shoe with digital audioTwo 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 connectionsDual-band Wi-Fi 802.11a/b/g/n/ac, subject to regional 5 GHz restrictions; Bluetooth 4.1Wi-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. Current Sony Japan specifications give approximately 580 photographs with the monitor or 520 with the viewfinder under CIPA conditions; Photography Blog's launch review instead reports a 610-shot claim. Main figure follows the current maker table.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.
ChargingIn-camera USB-C charging and USB Power Delivery–
DimensionsApproximately 131.3 × 96.4 × 79.8 mm; 69.7 mm depth from grip to monitorApproximately 132.7 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.
Weight detailApproximately 573 g body only; current Sony specifications give 658 g with battery and memory card. Photography Blog incorrectly describes the loaded figure as excluding battery/card; it is not used as body weight.Approximately 622 g body only; 713 g with battery and memory card; lens excluded.
In the box–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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