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Panasonic LUMIX S5IIX vs Sony Alpha 7 IV

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

Better figure, where one is clearly better

PanasonicLUMIX S5IIXSonyAlpha 7 IV
Overview
ReleasedMay 2023November 2021
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSExmor R back-illuminated CMOS
Sensor dimensions35.6 × 23.8 mm35.9 × 23.9 mm
Effective resolution24.2 MP33 MP
Largest image6000 × 40007008 × 4672
RAW recordingYesYes
Standard ISO range100–51200100–51200
Sensor detailMaker Japan specifies 24.2 million effective pixels, 35.6 × 23.8 mm CMOS; native 3:2 stills 6000×4000. High-resolution composites up to 12000×8000 are separate from native output; BSI or stacked construction is not inferredApproximately 34.1 million total pixels; 3:2 full-frame sensor
Image formatsJPEG, RAW and RAW+JPEG; high-resolution composite RAW generated in-cameraJPEG, HEIF and 14-bit RAW; compressed, lossless compressed and uncompressed RAW options
ISO detailStandard ISO 100–51200; expanded 50/102400/204800. Dual Native ISO 100/640 in standard stills, 640/4000 for V-Log and 400/2500 for HLG; profile-dependent ranges applyStandard still-image ISO 100–51200; expanded ISO 50–204800. Movie ISO 100–51200, expandable to 102400.
Image processor–BIONZ XR
Lens and shooting
Lens mountL-MountSony E-mount
StabilisationLens and sensor 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.
AutofocusPhase Hybrid AF combines phase and contrast detection; 779 points (maker US). Current Japan recognition includes people, animals, cars, motorcycles, trains and aircraft; launch-era reviews described fewer subjects, so later firmware recognition is not treated as a launch feature. Continuous autofocus during zooming requires compatible updated lens firmwareFast 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
ShutterMechanical 60–1/8000 second, Bulb approximately 30 minutes; electronic first curtain 60–1/2000 with the same Bulb maximum; electronic 60–1/8000 with Bulb approximately 60 secondsMechanical or electronic shutter; 1/8000 second to 30 seconds plus Bulb; full-frame flash sync 1/250 second
Burst detailFull-resolution electronic SH30 at 30 fps AFS/AFC/MF; SH30 PRE added in version 2.0. Current SH buffer 200 RAW/RAW+JPEG/JPEG frames. Mechanical/electronic-first-curtain 9 fps AFS/MF or 7 fps AFC; normal electronic 9/8 respectively. Normal RAW/RAW+JPEG buffer at least 200 and JPEG at least 300 frames under maker media/test conditionsHi+ 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 B.I.S. with compatible-lens Dual I.S.2; maker US Dual I.S.2 claim 6.5 stops under CIPA yaw/pitch conditions with S-E70200 at 200 mm and updated lens firmware. Active I.S. optimises video correction; electronic video modes have separate restrictionsFive-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.
FlashNo built-in flash; external flash sync up to 1/250 second, with reduced guide number and maker restrictions at the fastest sync setting–
Video
Highest video resolution5952 × 3968 at 29.97 fps3840 × 2160 at 60 fps
Video detailInternal 5952×3968 3:2 open-gate 6K at 29.97p, 4:2:0 10-bit HEVC Long GOP 200 Mbps; C4K/4K 59.94p uses an APS-C crop. ALL-Intra and ProRes 422/HQ options include 5776×3056 up to 29.97p with supported USB SSD/media restrictions. RAW is separate HDMI output to compatible Atomos/Blackmagic recorders, including 5888×3312 12-bit up to 29.97p or APS-C 4128×2176 up to 59.94p; not internal RAW. Built-in fan; maker unlimited-recording claims require 0–40 °C, and Thermal Management STANDARD can stop high-resolution recording after 30 minutes. Battery/media can also limit durationInternal 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; 48 kHz/24-bit recording and compatible external/XLR high-resolution 96 kHz/24-bit options under maker mode restrictions–
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,840,0001,036,800
TouchscreenYesYes
Tilting screenYesYes
Display detailThree-inch 3:2 capacitive touchscreen, approximately 1.84 million dots; free-angle articulation. Amateur Photographer and Tom's Guide report connected HDMI/USB cables can impede its movement, despite the maker launch claim of no interferenceSide-opening vari-angle touchscreen, approximately 176° opening and 270° rotation; dots are not image pixels
Viewfinder detailCurrent Japan table 0.5-inch 4:3 OLED, approximately 3.68 million dots, 100% coverage and 0.78× magnification with 50 mm lens/infinity/−1 dioptre/3:2 ratio. US launch release's 0.76× description differs and is not silently substituted0.5-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)370 photographs580 photographs
Body weight657 g573 g
Release detailMaker US confirms May 2023 availability; UK launch announcement states Spring 2023. Tom's Guide's June 2023 date is not used as the global first-sale month; no exact UK retail day inferred. UK body launch price £2299Sony 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 mediaTwo SD/SDHC/SDXC slots, both UHS-II including V90; supported formats can record to USB SSDSlot 1 accepts CFexpress Type A or UHS-I/II SD cards; slot 2 accepts UHS-I/II SD cards
PortsUSB-C SuperSpeed USB 10 Gbps, full-size HDMI Type A, 2.5 mm remote and 3.5 mm microphone/headphone sockets; wired LAN streaming requires an optional USB-LAN adapterFull-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 2.4 GHz 802.11b/g/n and 5 GHz 802.11a/n/ac; Bluetooth Low Energy 5.0. Wired/wireless IP streaming and USB tethering; regional 5 GHz restrictions applyDual-band Wi-Fi 802.11a/b/g/n/ac, subject to regional 5 GHz restrictions; Bluetooth 4.1
Battery life detailDMW-BLK22, 7.2 V 2200 mAh; current Japan table approximately 370 LCD/EVF shots with S-R2060 and Panasonic SDXC, or 1250 under specified one-second power-save EVF conditions. Tom's Guide's quoted 330 shots is not substituted for the current maker tableNP-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.
ChargingJapan table approximately 220 minutes in-camera with bundled AC adapter or 170 with DMW-BTC15 adapter; optional DMW-BTC15 charger approximately 175 minutesIn-camera USB-C charging and USB Power Delivery
DimensionsApproximately 134.3 × 102.3 × 90.1 mm, excluding protrusionsApproximately 131.3 × 96.4 × 79.8 mm; 69.7 mm depth from grip to monitor
Weight detailMaker Australia and Germany specify 657 g body only; Japan 740 g with battery and one SD card. Lens excludedApproximately 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 die-cast front and rear frames; dust/splash-resistant construction, not waterproof; matte black body and dark markings–
In the boxMaker Japan lists body cap, hot-shoe cover, battery-grip connector cover, shoulder strap, battery, USB AC adapter and USB A–C cable; regional contents may vary–

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