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Sony Alpha 7S vs Sony Alpha 9 III

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

Better figure, where one is clearly better

SonyAlpha 7SSonyAlpha 9 III
Overview
ReleasedJune 2014January 2024
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeExmor CMOSStacked Exmor RS CMOS with global shutter
Sensor dimensions35.6 × 23.8 mm35.6 × 23.8 mm
Effective resolution12.2 MP24.6 MP
Largest image4240 × 28326000 × 4000
RAW recordingYesYes
Standard ISO range100–102400250–25600
Sensor detailApproximately 12.4 million total pixels; 3:2 sensor; anti-static coating and ultrasonic dust reductionApproximately 25.2 million total pixels; integral memory and global exposure rather than sequential line exposure.
Image formatsJPEG and RAW (Sony ARW 2.3); 14-bit RAW output; XAVC S, AVCHD 2.0 and MP4 moviesJPEG, HEIF and Sony ARW 5.0 RAW.
ISO detailStandard still-image ISO 100–102400; extended ISO 50–80 and 128000–409600; movie extended range reaches ISO 409600. UK support combines standard and extended settings, so the standard range follows Sony Japan's explicit specification.Standard ISO 250–25600 for stills and movies; stills expand to ISO 125–51200.
Image processorBIONZ XBIONZ XR with dedicated AI processing unit.
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationOptical lens stabilisationSensor shift
Maximum continuous burst5 fps120 fps
Lens detailInterchangeable E-mount; full-frame FE lenses use the whole sensor; APS-C lenses can use a lower-resolution crop. ILCE-7S is supplied without a lens.–
AutofocusContrast-detection AF with 25 points; maker detection range EV -4 to 20 at ISO 100 with an f/2 lens; AF-S, AF-C, direct manual focus and manual focus; Lock-on AF and Eye AFUp to 759 still-image or 627 movie phase-detection points; sensitivity EV −5 to 20 with an F2 lens at ISO 100 equivalent. Current UK specification includes automatic subject selection and people, animals, birds, insects, cars, trains and aircraft; launch reviews precede later firmware enhancements.
ShutterElectronically controlled focal-plane shutter; 30 seconds to 1/8000 second plus Bulb; flash sync 1/250 second with Sony flash; electronic first curtain and silent electronic shutter selectable–
Burst detailUp to 5 fps Speed Priority Continuous or 2.5 fps normal continuous; maker speed-priority buffer approximately 30 RAW or 25 RAW+JPEG images. Photography Blog states speed priority fixes focus and exposure at the first frame, while normal continuous can update both.Up to 120 fps full-resolution electronic bursts with AF/AE tracking under Sony test conditions; speed depends on lens compatibility and shooting settings. Pre-Capture retains up to one second before full shutter press. No mechanical shutter.
Stabilisation detailNo sensor-shift stabilisation; optical correction requires a compatible stabilised lensFive-axis sensor shift; 8.0-stop CIPA pitch/yaw claim with FE 50mm F1.2 GM and long-exposure noise reduction off. Active and Dynamic Active movie modes supported.
FlashNo built-in flash; Multi Interface Shoe supports compatible external flash–
Exposure controls1200-zone evaluative metering; program, aperture priority, shutter priority and manual modes; exposure compensation ±5 EV, or ±3 EV using the dedicated dial–
Video
Highest video resolution1920 × 1080 at 60 fps3840 × 2160 at 120 fps
Video detailInternal Japanese/NTSC Full HD up to 1920 × 1080 at 60p, 30p or 24p in XAVC S at 50 Mbps; PAL modes include 50p/25p. 1280 × 720 at 120p NTSC automatically crops to APS-C; PAL offers 100p. 4K 3840 × 2160 at 30p/24p is HDMI output only and needs a compatible external recorder; 8-bit 4:2:2. S-Log2, timecode, zebra and recording-control features; approximately 29-minute internal clip limit.Up to uncropped 3840 × 2160 120p NTSC or 100p PAL; 4K 60p uses 6K oversampling. Supports 10-bit 4:2:2, S-Log3 and S-Cinetone; All-Intra 4K tops out at 60p. External HDMI RAW output is separate from internal recording.
AudioBuilt-in stereo microphone; LPCM, Dolby Digital or AAC by recording format; adjustable levels; 3.5 mm microphone and headphone sockets; compatible optional shoe-mounted XLR adaptor–
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3.2″
Screen dots921,6002,095,104
TouchscreenNoYes
Tilting screenYesYes
Display detailLCD tilts approximately 90° upwards and 45° downwards; no touchscreenFour-axis LCD tilts and opens sideways; approximately 98° up, 40° down, 180° sideways and 270° rotation.
Viewfinder detail0.5-type OLED; 2,359,296 dots; 100% coverage; approximately 0.71× magnification with a 50 mm lens at infinity0.64-inch Quad-XGA OLED with 9437184 dots and approximately 0.90× magnification with a 50 mm lens at infinity; selectable up to 240 fps NTSC or 200 fps PAL.
Connections and design
Wi-FiYesYes
Bluetooth–Yes
Battery life (maker's claim)380 photographs530 photographs
Body weight446 g617 g
Release detailSony Japan specifies 20 June 2014 retail availability for ILCE-7S. This is the original 12.2 MP Alpha 7S, not a later 7S or the higher-resolution 7/7R families.Sony UK announced availability in January 2024; Japan's announcement specifies 26 January. The main date retains UK month precision.
Recording mediaSD, SDHC and SDXC with UHS-I; Memory Stick PRO Duo, PRO-HG Duo and XC-HG Duo; XAVC S requires Class 10 SDXCBoth slots accept CFexpress Type A or UHS-I/UHS-II SD.
PortsMulti/Micro USB, Micro HDMI Type D, Multi Interface Shoe, 3.5 mm microphone and headphone sockets and vertical-grip connectorUSB Type-C at 10 Gbps, Multi/Micro USB, full-size HDMI, 1000BASE-T Ethernet, sync terminal, 3.5 mm microphone and headphone sockets and digital-audio Multi Interface Shoe.
Wireless connectionsWi-Fi 802.11b/g/n at 2.4 GHz and NFC One-touch remote/sharingWi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz and Bluetooth 5.0.
Battery life detailNP-FW50; CIPA maker claim approximately 380 photographs using LCD or 320 using viewfinderNP-FZ100; Sony UK CIPA approximately 530 photographs with LCD or 400 with viewfinder. Japan lists 520/410 respectively. USB Type-C Power Delivery charging and power supported.
ChargingIn-camera USB charging; optional AC-PW20 external power adaptor–
DimensionsApproximately 126.9 × 94.4 × 54.8 mm from grip to viewfinder; 48.2 mm depth from grip to monitorApproximately 136.1 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.
Weight detailApproximately 446 g body only; 489 g with battery and media; both exclude lensSony UK specifies approximately 617 g body only or 702 g with battery and memory card; Japan specifies 618/703 g respectively. Main figures use the UK specification.
In the boxSony Japan lists two NP-FW50 batteries, BC-TRW charger, AC-UUD11 adaptor, cable protector, strap, USB cable, body/shoe caps and eyepiece cup. TechRadar reports one battery in its UK/Australian package; contents vary by region.NP-FZ100 battery, BC-QZ1 charger, power cord, cable protector, shoulder strap, body cap, accessory shoe cap and eyepiece cup, according to Sony UK.

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