New Full-frame 12.1MP* back-illuminated CMOS image sensor
* Approx., effective
Key benefits of CMOS image sensor
・Up to ISO 409600* thanks to large pixel size
・2x** faster readout speed
・3x** reduced rolling shutter
・759-point focal plane phase-detection AF
* Expanded  ** Compared to α7S II
New image processing engine for up to 8x more processing power*, and future-oriented architecture
* Compared to the BIONZ X processing engine, Sony tests.
High sensitivity up to ISO 409600*
ISO 3200 Actual brightness
ISO 80/100/200/400/800/1600/3200/6400/12800/25600/51200/102400
* Expanded
15+* stop wide dynamic range
* S-Log3 movies, Sony tests.
α7S III Key Features
Unparalleled movie-recording performance
Features that expand your visual expression
Highly capable still image capture
Smooth, reliable operation for professionals
α7S III Key Features
Unparalleled movie-recording performance
4K recording up to 120p* with full-pixel readout without binning
Astonishing low light performance
* With 10% image crop.
4K recording up to 120p* with full-pixel readout without binning
All-Intra** encoding up to 1200Mbps***
* With 10% image crop.
** When XAVC S-I 4K or HD is selected via the file format menu.
*** CFexpress Type A memory card (VPG200 or higher)
4K recording up to 120p* with full-pixel readout without binning
Fast Hybrid Auto-focus
* With 10% image crop
10bit 4:2:2 S-Log3 for professional workflows
S-Log3/S-Gamut3.Cine / After colour grading
16-bit RAW video output via HDMI Type-A connector
Efficient MPEG-H HEVC/H.265 codec 
XAVC HS encoding offers approximately twice* the compression efficiency
AVC/H.264  HEVC/H.265
* Compared to AVC/H.264.
10-bit HDR shooting
Edit and display instantly with HLG support
Creative Look for beautiful in-camera creativity
α7S III Key Features
Unparalleled movie-recording performance
Features that expand your visual expression
Highly capable still image capture
Smooth, reliable operation for professionals
α7S III Key Features
Features that expand your visual expression
Smooth and accurate AF tracks fast-moving subjects in all movie modes, including 4K 120p
Wide AF coverage
Real-time Tracking, powered by AI 
Detailed AF controls: AF Transition Speed
Fast
Detailed AF controls: AF Transition Speed
Slow
Detailed AF controls: AF Subject Shift Sensitivity
Sensitive
Detailed AF controls: AF Subject Shift Sensitivity
Persistent
Approx. 30% improved* Real-time Eye AF for movies
* Improvement in human eye detection rate. Sony tests.
Touch AF support in manual-focus mode
New Active Mode* optical image stabilisation for stable handheld shooting
* Slight image crop in Active Mode.  “Standard” setting recommended for focal lengths of 200mm or longer.
New Active Mode* optical image stabilisation for stable handheld shooting
* Slight image crop in Active Mode. “Standard” setting recommended for focal lengths of 200mm or longer.
New Active Mode* optical image stabilisation for stable handheld shooting
Active Mode* / Off
* Slight image crop in Active Mode. “Standard” setting recommended for focal lengths of 200mm or longer.
Enhanced audio quality
・Digital audio interface 
・4-channel 24-bit recording available with optional XLR-K3M
α7S III Key Features
Unparalleled movie-recording performance
Features that expand your visual expression
Highly capable still image capture
Smooth, reliable operation for professionals
α7S III Key Features
Highly capable still image capture
High sensitivity and wide dynamic range
Natural skin tones
Fast Hybrid AF combines the speed and tracking capability of phase-detection AF with the precision of contrast-detection AF
Wide / Fast / Steadfast
Accurate AF in near darkness. As low as EV-6*
* ISO 100 equivalent, F2.0 lens, AF-S mode
Real-time Eye AF 
Human / Animals*
* Approx. 30% improvement in human eye detection for profile shots and faces looking downward. Sony tests.
* Stills only 
Up to 10fps* bursts with AF/AE over 1000** uncompressed RAW images*
* Up to 10 fps in continuous “Hi+” mode and up to 8 fps in “H” mode. CFexpress Type A memory card. Sony tests.
** CFexpress Type A memory card is required.
α7S III Key Features
Unparalleled movie-recording performance
Features that expand your visual expression
Highly capable still image capture
Smooth, reliable operation for professionals
α7S III Key Features
Smooth, reliable operation for professionals
Side-opening vari-angle LCD monitor
New touch control menu, developed alongside creators
9.44 million-dot* EVF
・0.64-type
・0.90x viewfinder magnification**
・Approx. 41° diagonal field of view
・25mm high eyepoint
* Approx.
** 50mm lens, infinity, -1m-1 diopter
Switchable viewfinder magnification
CFexpress Type A-compatible dual media slots
Supports CFexpress Type A and UHS-II SD cards
UHS-II SD card
World's first* support for CFexpress Type-A memory cards
Astonishing-speed (700MB/s write and 800MB/s read) maximises the α7S III's capabilities
UHS-II SD card / CFexpress Type-A
CFexpress Type A
*As of July 2020 product announcement. Compared to interchangeable lens digital cameras, Sony survey.
Optimised passive heat dissipation
Dependable, continuous 4K 60p recording for an hour*
* Sony tests. When Auto Power Off temperature is set to high. Under normal temperature (25 deg C).
New heat management structure
5x more effective cooling, with Sony's unique Σ (sigma) graphite heatsink
Reliable, durable construction
Long-life Z battery
High capacity battery lets to shoot stills and movies up to 60% longer*
* Compared to α7S II. 
Durable and reliable Type-A HDMI connector
USB Type-C® connector with 5Gbps SuperSpeed and PD (Power Delivery) support
High-performance Wi-Fi® control
Shoot and transfer wirelessly to PCs with fast 2.4GHz/5GHz* connectivity
* 5GHz communications may be restricted in some countries and regions
Preview, control and transfer wirelessly with mobile devices
High-speed FTP file transfer for stills and movies
Wired LAN with optional adaptor
Wireless LAN
USB Tethering
Imagination in Motion
