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Panasonic LUMIX S1R vs Sony Alpha 7R IV

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

Better figure, where one is clearly better

PanasonicLUMIX S1RSonyAlpha 7R IV
Overview
ReleasedMarch 2019September 2019
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeCMOSBack-illuminated Exmor R CMOS
Sensor dimensions36 × 24 mm35.7 × 23.8 mm
Effective resolution47.3 MP61 MP
Largest image8368 × 55849504 × 6336
RAW recordingYesYes
Standard ISO range100–25600100–32000
Sensor detail47.3 million effective and 50.4 million total pixels; primary colour filter and supersonic wave dust filter. High-resolution mode combines multiple exposures into 16736×11168 RAW files, separate from native single-exposure pixelsApproximately 62.5 million total pixels; 3:2 sensor. Pixel Shift Multi Shooting combines 16 exposures into a 19008 × 12672 image using Imaging Edge on a computer; requires a stationary camera and subject. This is separate from the normal single-shot resolution.
Image formatsJPEG, RAW and HLG PhotoJPEG, RAW and RAW+JPEG; Sony ARW 2.3 compressed or uncompressed RAW.
ISO detailStandard ISO 100–25600; expanded ISO 50 and 51200Standard still-image ISO 100–32000; expanded ISO 50–102400.
Image processor–BIONZ X and front-end LSI.
Lens and shooting
Lens mountL-MountSony E-mount
StabilisationLens and sensor shiftSensor shift
Maximum continuous burst9 fps10 fps
AutofocusContrast AF with DFD; human/animal detection, tracking and 225-area selection. Firmware 1.6 added head recognition and revised tracking; not a phase-detection sensorFast Hybrid AF with 567 full-frame phase-detection points and 425 contrast points; phase points cover approximately 74% of the image. Real-time tracking and human/animal Eye AF for stills; human Eye AF in movies. APS-C point counts differ.
ShutterFocal-plane mechanical, electronic front curtain and electronic shutter options; maker rated shutter life approximately 400000 images–
Burst detailNative 9 fps AFS/MF; mechanical/electronic front curtain 6 fps AFC, electronic 5 fps AFC. Maker buffer more than 40 RAW, 35 RAW+JPEG or 50 JPEG using Sony XQD G-series card. Reduced-resolution 6K/4K Photo modes are separate from full-resolution burstsUp to approximately 10 fps in Hi+ with AF/AE tracking; approximately 8 fps in Hi. Sony lists 68 compressed RAW or 30 uncompressed RAW frames under its test conditions. Speed and buffer depend on settings and lens; some lenses need firmware updates.
Stabilisation detailFive-axis Body I.S.; firmware 1.2 dated 9 July 2019 raises rating from 5.5 to 6 stops with S-X50 at 50 mm. Compatible-lens Dual I.S. 2 rises from 6 to 6.5 stops with S-R24105 at 105 mm or S-R70200 at 200 mm, CIPA yaw/pitchFive-axis sensor shift; Sony claims 5.5 stops under CIPA pitch/yaw conditions with Planar T* FE 50mm F1.4 ZA and long-exposure noise reduction off.
Video
Highest video resolution4992 × 3744 at 30 fps3840 × 2160 at 30 fps
Video detailFirmware 1.6 dated 24 November 2020 adds internal 4992×3744 5K at maker-labelled 30p/25p/24p, 4:2:0 10-bit LongGOP 200 Mbps; headline frame rate retains that published mode label. Original launch specifications were 4K up to 60p with 8-bit internal recording. The same update adds 4K60 4:2:2 10-bit HDMI output, distinct from internal recording. Launch review limitations are historical rather than current firmware specificationsJapanese specification lists XAVC S 4K at 30p or 24p and up to 100 Mbps; headline maximum reflects Japanese/NTSC mode. Super 35mm uses full-pixel readout without binning with a narrower field of view; full-frame 4K is a separate mode. HLG, S-Log2 and S-Log3; 8-bit 4:2:2 HDMI output. Full HD 120p is a lower-resolution mode.
AudioBuilt-in stereo microphone, monaural speaker, microphone/line input and headphone monitoring; optional DMW-XLR1 adapterStereo microphone; 3.5 mm microphone and headphone sockets. Multi Interface Shoe supports digital audio with compatible accessories.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3.2″3″
Screen dots2,100,0001,440,000
TouchscreenYesYes
Tilting screenYesYes
Display detailThree-point-two-inch 3:2 capacitive touchscreen, approximately 2.1 million dots and triaxial tilt; separate top status LCDTFT LCD tilts approximately 107° up and 41° down; touch focus and touchpad operation. Original ILCE-7RM4 has 1,440,000 dots; the later ILCE-7RM4A has a different display.
Viewfinder detailOLED approximately 5.76 million dots, 100% coverage and 0.78× with 50 mm lens at infinity, −1 dioptre and 3:2 ratio; 60/120 fps display0.5-inch electronic viewfinder with 5,760,000 dots, 100% coverage and approximately 0.78× magnification; selectable 60/120 fps display.
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)380 photographs670 photographs
Body weight899 g580 g
Release detailMaker Japan confirms 23 March 2019 sale; headline month avoids inferring the exact UK day. Digital Camera World includes explicitly identified pre-production S1 illustrations but reports production S1R checks and its own laboratory results; these separate samples are not treated as S1R specification sources. No inferred successor linkSony Japan specifies 6 September 2019 for ILCE-7RM4; this is the Japanese on-sale date, not a UK release claim. July reservations preceded sale.
Recording mediaSlot 1 XQD, with CFexpress support requiring firmware 1.3 or later; slot 2 SD/SDHC/SDXC UHS-I/UHS-II including V90Two SD/SDHC/SDXC slots, both supporting UHS-II; simultaneous, relay and separate-media recording.
PortsUSB-C SuperSpeed USB 3.1 Gen 1, full-size HDMI Type A, 2.5 mm remote and 3.5 mm microphone/line/headphone connectionsUSB Type-C, Multi/Micro USB, Micro HDMI, microphone and headphone sockets, sync terminal and Multi Interface Shoe.
Wireless connectionsWi-Fi 2.4 GHz 802.11b/g/n and 5 GHz 802.11a/n/ac, subject to regional availability; Bluetooth Low Energy 4.2Wi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz, NFC and Bluetooth smartphone connection.
Battery life detailMaker 7.4 V 3050 mAh 23 Wh pack. CIPA with S-R24105 and SD approximately 380 LCD/360 EVF shots; with XQD 360 LCD/340 EVF. Conditional one-second power-save EVF 1150 SD/1100 XQD is not headlineNP-FZ100; CIPA approximately 670 photographs with LCD or 530 with viewfinder; USB charging and power supported.
ChargingUSB charging/power and supplied dedicated charger–
DimensionsApproximately 148.9 × 110.0 × 96.7 mm, excluding protrusionsApproximately 128.9 × 96.4 × 77.5 mm (width × height × maximum depth); grip-to-monitor depth 67.3 mm.
Weight detailMaker approximately 899 g body only, 1016 g with SD/battery or 1020 g with XQD/battery; Photography Blog's 898 g prose is not substitutedApproximately 580 g body only; 665 g with battery and memory card; lens excluded.
MaterialsDust/splash-resistant construction, not waterproof; recommended −10 to 40 °C–
In the boxMaker Japan lists body cap, hot-shoe cover, eyecup, flash-sync cap, battery-grip contact cover, shoulder strap, cable holder, battery, charger, AC adapter, mains cable and USB C–C/A–C cables; regional contents varyPower cord, NP-FZ100 battery, cable protector, BC-QZ1 charger, shoulder strap, body cap, accessory shoe cap, eyepiece cup and USB Type-C cable, according to Sony Japan.

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