The Sony a7S III Mirrorless Camera is Sony’s ultimate full-frame video and low-light powerhouse, built for visual storytellers who refuse to compromise. Driven by a redesigned 12.1MP Exmor R BSI CMOS sensor and the blazing-fast BIONZ XR processor, it delivers up to 14 stops of dynamic range for stills and 15 stops for video, with a jaw-dropping extended ISO range of 40 to 409,600 — making it the definitive tool for shooting in near-darkness.
From its UHD 4K 120p internal recording with 10-bit 4:2:2 sampling and optional 16-bit RAW output, to its 759-point Fast Hybrid AF covering 92% of the frame, the a7S III is engineered for unlimited creative control. A stunning 9.44m-dot QXGA OLED EVF, fully articulating 3.0-inch vari-angle touchscreen, 5-axis in-body stabilization, and dual CFexpress Type A/SD slots complete a camera that sets the benchmark for professional mirrorless imaging in Egypt and beyond.
Key features
- Extraordinary Low-Light Sensitivity: Extended ISO 40–409,600 with a back-illuminated 12.1MP Exmor R BSI CMOS sensor delivers clean, detailed images even in near-total darkness.
- Cinema-Grade 4K Video: Record UHD 4K up to 120p with full pixel readout, 10-bit 4:2:2 internal recording, and 16-bit RAW output via HDMI — plus S-Cinetone and S-Log2 for professional color grading.
- Blazing-Fast Hybrid Autofocus: 759 phase-detection points plus 425 contrast-detection areas cover 92% of the image area with Real-time Tracking, accurate down to -6 EV.
- 5-Axis In-Body Stabilization: SteadyShot IBIS keeps handheld footage and stills sharp across all shooting conditions, compatible with Sony E-mount lenses.
- Professional Monitoring & Display: A 9.44m-dot QXGA OLED EVF and a 3.0-inch 1.44m-dot vari-angle touchscreen make framing and reviewing footage intuitive in any shooting scenario.
- Unlimited Recording & Robust Storage: No recording time limit, up to ~60 minutes at 4K60p thanks to improved heat dissipation, with dual CFexpress Type A/SD card slots and bitrates up to 600 Mb/s.
Specifications
| Sensor | 12.1MP Full-Frame Exmor R BSI CMOS (Back-Illuminated) |
|---|---|
| Megapixels | 12.1 MP |
| Video | UHD 4K 120p, 10-Bit 4:2:2 Internal, 16-Bit RAW Output, up to 600 Mb/s |
| ISO Range | 80-102400 (Extended: 40-409600) |
| Autofocus | 759-Point Fast Hybrid AF (Phase + Contrast Detection), covers 92% of frame, down to -6 EV |
| Image Stabilization | 5-Axis SteadyShot In-Body Image Stabilization |
| Viewfinder | 9.44m-Dot QXGA OLED Electronic Viewfinder |
| Screen | 3.0-inch 1.44m-Dot Vari-Angle Touchscreen LCD |
| Continuous Shooting | 10 fps, up to 1000 Uncompressed RAW Files |
| Storage | Dual CFexpress Type A / SD Card Slots |
Frequently asked questions
What video resolutions and frame rates does the Sony a7S III support?
The Sony a7S III records UHD 4K at up to 120p using a full 1:1 pixel readout with no binning, and Full HD at an effective 240p. Internal recording supports 10-bit 4:2:2 sampling in all modes, while 16-bit RAW output is available via the full-size HDMI port for maximum post-production flexibility.
How good is the low-light performance of the Sony a7S III?
The a7S III is class-leading for low-light work. Its 12.1MP Exmor R BSI CMOS sensor offers a native ISO range of 80–102,400, expandable to an extraordinary 40–409,600, and its Fast Hybrid AF remains functional down to -6 EV — making it ideal for event, documentary, and night photography or videography.
What memory cards does the Sony a7S III use?
The Sony a7S III features dual card slots that each accept either CFexpress Type A or standard SD cards (UHS-I/II compatible), giving you flexible, high-speed storage options for both photo and high-bitrate video recording up to 600 Mb/s.
