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Sony Alpha 7 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 7 IISonyAlpha 7 IV
Overview
ReleasedDecember 2014November 2021
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeExmor CMOSExmor R back-illuminated CMOS
Sensor dimensions35.8 × 23.9 mm35.9 × 23.9 mm
Effective resolution24.3 MP33 MP
Largest image6000 × 40007008 × 4672
RAW recordingYesYes
Standard ISO range100–25600100–51200
Sensor detailApproximately 24.7 million total pixels; 3:2 sensor.Approximately 34.1 million total pixels; 3:2 full-frame sensor
Image formatsJPEG, RAW and RAW+JPEG; Sony ARW 2.3; the current maker specification includes uncompressed RAW.JPEG, HEIF and 14-bit RAW; compressed, lossless compressed and uncompressed RAW options
ISO detailStandard still-image ISO 100–25600; expanded ISO 50, 64 and 80. Multi Shot NR reaches ISO 51200 by combining images rather than extending the standard single-image range.Standard still-image ISO 100–51200; expanded ISO 50–204800. Movie ISO 100–51200, expandable to 102400.
Image processorBIONZ X.BIONZ XR
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst5 fps10 fps
Lens detail–Interchangeable E-mount; body figures exclude lenses. ILCE-7M4K kit includes FE 28–70mm F3.5–5.6 OSS.
AutofocusFast Hybrid AF with 117 phase-detection points in full-frame mode and 25 contrast-detection points; single AF, continuous AF, direct manual focus and manual focus.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
ShutterFocal-plane shutter; 30 seconds to 1/8000 second plus Bulb; electronic first curtain can be enabled or disabled.Mechanical or electronic shutter; 1/8000 second to 30 seconds plus Bulb; full-frame flash sync 1/250 second
Burst detailUp to approximately 5 fps in Continuous Hi with AF/AE tracking, according to Sony's announcement; approximately 2.5 fps in Continuous Lo. Speed varies with shooting conditions and the memory card.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 image-sensor shift; Sony claims 4.5 stops under CIPA conditions for pitch/yaw with Sonnar T* FE 55mm F1.8 ZA and long-exposure noise reduction off. Correction depends on the lens.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 resolution1920 × 1080 at 60 fps3840 × 2160 at 60 fps
Video detailJapanese specification lists XAVC S Full HD 60p, 30p and 24p at approximately 50 Mbps. The headline maximum reflects this NTSC/Japanese mode; no 4K movie recording. S-Log2 picture profiles and clean HDMI output are supported.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.
AudioBuilt-in stereo microphone; 3.5 mm microphone and headphone sockets.–
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,228,8001,036,800
Touchscreen–Yes
Tilting screenYesYes
Display detailTFT screen tilts approximately 107° up and 41° down; dots count colour subpixels.Side-opening vari-angle touchscreen, approximately 176° opening and 270° rotation; dots are not image pixels
Viewfinder detail0.5-inch XGA OLED Tru-Finder; 2,359,296 dots; 100% coverage and approximately 0.71× magnification with a 50 mm lens at infinity.0.5-type OLED; 3,686,400 dots; 100% coverage; approximately 0.78× magnification; 60 or 120 fps display
Connections and design
Wi-FiYesYes
Bluetooth–Yes
Battery life (maker's claim)350 photographs580 photographs
Body weight556 g573 g
Release detailSony Japan specifies 5 December 2014 for the ILCE-7M2 body, following its 20 November announcement; this is the Japanese sale date, not a UK release claim.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 mediaSD, SDHC and SDXC including UHS-I; Memory Stick PRO Duo, PRO-HG Duo and XC-HG Duo.Slot 1 accepts CFexpress Type A or UHS-I/II SD cards; slot 2 accepts UHS-I/II SD cards
PortsMulti/Micro USB, Micro HDMI, microphone and headphone sockets and 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 802.11b/g/n at 2.4 GHz and NFC.Dual-band Wi-Fi 802.11a/b/g/n/ac, subject to regional 5 GHz restrictions; Bluetooth 4.1
Battery life detailNP-FW50; Sony's UK specification gives up to approximately 350 photographs.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 126.9 × 95.7 × 59.7 mm (width × height × depth), according to Sony's launch specification.Approximately 131.3 × 96.4 × 79.8 mm; 69.7 mm depth from grip to monitor
Weight detailApproximately 556 g body only; 599 g with battery and Memory Stick PRO Duo; lens excluded.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.
MaterialsMagnesium-alloy top and front covers and internal structure; dust- and moisture-resistant design, not a waterproof rating.–
In the boxPower cord, NP-FW50 battery, AC adaptor, shoulder strap, body cap, accessory shoe cap, eyepiece cup and Micro USB cable, according to Sony UK.–

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