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Sony Alpha 1 II vs Sony Alpha 7 IV

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

Better figure, where one is clearly better

SonyAlpha 1 IISonyAlpha 7 IV
Overview
ReleasedDecember 2024November 2021
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeStacked Exmor RS CMOS with integral memoryExmor R back-illuminated CMOS
Sensor dimensions35.9 × 24 mm35.9 × 23.9 mm
Effective resolution50.1 MP33 MP
Largest image8640 × 57607008 × 4672
RAW recordingYesYes
Standard ISO range100–32000100–51200
Sensor detailApproximately 50.5 million total pixels; Pixel Shift Multi Shooting uses four or 16 exposures combined in compatible computer software.Approximately 34.1 million total pixels; 3:2 full-frame sensor
Image formatsJPEG, HEIF and Sony ARW 5.0 RAW.JPEG, HEIF and 14-bit RAW; compressed, lossless compressed and uncompressed RAW options
ISO detailStandard ISO 100–32000 for stills and movies; stills expand to ISO 50–102400.Standard still-image ISO 100–51200; expanded ISO 50–204800. Movie ISO 100–51200, expandable to 102400.
Image processorBIONZ XR and dedicated AI processing unit.BIONZ XR
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst30 fps10 fps
Lens detail–Interchangeable E-mount; body figures exclude lenses. ILCE-7M4K kit includes FE 28–70mm F3.5–5.6 OSS.
AutofocusUp to 759 phase-detection points for stills and movies; sensitivity EV −4 to 20 in AF-S with an F2 lens at ISO 100. Automatic or selected recognition of people, animals, birds, insects, cars, trains and aircraft. Sony's current feature page specifies Real-time Recognition AF+ from firmware version 4.00; launch reviews describe earlier firmware.Fast 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 movies
Shutter–Mechanical or electronic shutter; 1/8000 second to 30 seconds plus Bulb; full-frame flash sync 1/250 second
Burst detailUp to 30 fps electronic Hi+ with AF/AE tracking under compatible-lens and maker conditions; uncompressed or lossless-compressed RAW up to 20 fps; mechanical Hi+ up to 10 fps. Pre-Capture retains up to one second before full shutter press, subject to camera temperature and shooting conditions. A custom button can temporarily change burst speed.Hi+ 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.
Stabilisation detailFive-axis sensor shift; centre 8.5 stops and periphery 7.0 stops under CIPA 2024 pitch/yaw/roll conditions with FE 50mm F1.2 GM and long-exposure noise reduction off. Active and Dynamic Active movie modes narrow the field of view and are unavailable in 8K or at frame rates of 120 fps or higher.Five-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.
Video
Highest video resolution7680 × 4320 at 30 fps3840 × 2160 at 60 fps
Video detailSony's current feature page lists internal 7680 × 4320 30p XAVC HS with 8.6K oversampling and 10-bit 4:2:2 support. Lower-resolution 4K up to 120p has approximately 10% crop; Full HD 240 fps is lower resolution. S-Log3, S-Cinetone and imported LUTs supported; external HDMI RAW is separate from internal recording.Internal 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.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3.2″3″
Screen dots2,095,1041,036,800
TouchscreenYesYes
Tilting screenYesYes
Display detailFour-axis TFT LCD opens approximately 98° up, 40° down and 180° sideways, with 270° rotation when opened sideways.Side-opening vari-angle touchscreen, approximately 176° opening and 270° rotation; dots are not image pixels
Viewfinder detail0.64-inch Quad-XGA OLED with 9437184 dots and approximately 0.90× magnification with a 50 mm lens at infinity. Selectable 60/120/240 fps; standard magnification is unavailable at 240 fps.0.5-type OLED; 3,686,400 dots; 100% coverage; approximately 0.78× magnification; 60 or 120 fps display
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)520 photographs580 photographs
Body weight658 g573 g
Release detailSony UK specifies availability in December 2024; no release day inferred. Exact technical figures use Sony Japan because the UK specification URLs were inaccessible during research.Sony 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.
Recording mediaBoth slots accept CFexpress 2.0 Type A or UHS-I/UHS-II SD.Slot 1 accepts CFexpress Type A or UHS-I/II SD cards; slot 2 accepts UHS-I/II SD cards
PortsUSB Type-C at 10 Gbps, Multi/Micro USB, full-size HDMI, 2.5GBASE-T Ethernet, sync terminal, 3.5 mm microphone and headphone sockets and digital-audio Multi Interface Shoe.Full-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 audio
Wireless connectionsWi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz and Bluetooth 5.0.Dual-band Wi-Fi 802.11a/b/g/n/ac, subject to regional 5 GHz restrictions; Bluetooth 4.1
Battery life detailNP-FZ100; Sony Japan CIPA approximately 520 photographs with LCD or 420 with viewfinder. PhotographyBlog's 530/400 figures are not used. USB Type-C Power Delivery charging and power supported.NP-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.
Charging–In-camera USB-C charging and USB Power Delivery
DimensionsApproximately 136.1 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.Approximately 131.3 × 96.4 × 79.8 mm; 69.7 mm depth from grip to monitor
Weight detailApproximately 658 g body only or 743 g with battery and memory card, excluding lens. PhotographyBlog's inconsistent 617 g figure is not used.Approximately 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.
In the boxOne NP-FZ100 battery, BC-ZD1 dual-battery charger, cable protector, shoulder strap, body cap, accessory shoe cap and FDA-EP19/FDA-EP21 eyepiece cups, according to Sony Japan. USB Power Delivery AC adaptor and USB cable are not included.–

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