Sony Alpha a7S III Full-Frame Mirrorless Camera

The Sony Alpha a7S III redefines the capabilities of full-frame mirrorless cameras, offering exceptional video performance, sensitivity, and speed. Equipped with a newly designed 12.1MP Exmor R BSI CMOS sensor and the advanced BIONZ XR image processor, this camera delivers faster performance, enhanced noise reduction, and a broader dynamic range. Capable of UHD 4K 120p video recording with internal 10-bit 4:2:2 sampling, the a7S III is a powerhouse for videographers and photographers alike.

Key Features

• 12MP Full-Frame Exmor R BSI CMOS Sensor
• UHD 4K 120p Video, 10-Bit 4:2:2 Internal Recording
• 16-Bit Raw Output, HLG & S-Cinetone
• 759-Point Fast Hybrid Autofocus
• 9.44m-Dot QXGA OLED Electronic Viewfinder
• 3.0" 1.44m-Dot Vari-Angle Touchscreen LCD
• 5-Axis SteadyShot Image Stabilization
• Extended ISO Range 40-409600, 10 fps Continuous Shooting
• Dual CFexpress Type A/SD Card Slots

The a7S III is primarily designed for superior video production. Enhancements to the sensor and processor result in faster readout speeds and significantly reduced rolling shutter effects. It features high-bitrate internal recording and offers 16-bit raw output via the full-size HDMI port. With no recording time limits, it supports HLG for direct HDR production and S-Log2/S-Log3 gamma profiles for advanced HDR work.

Autofocus is enhanced with 759 phase-detection points, providing intelligent subject tracking and Real-time Eye AF for precision focusing on moving subjects. The camera excels in sensitivity with an expanded ISO range from 40-409600 and supports fast 10 fps continuous shooting for up to 1000 raw frames. The 5-axis SteadyShot INSIDE minimizes camera shake by up to 5.5 stops.

Physically, the a7S III features a redesigned rear LCD with a side-open articulating mechanism and an exceptional 9.44m-dot OLED electronic viewfinder. The updated menu system offers intuitive navigation, and the body design enhances heat dissipation for improved continuous recording capabilities. Dual memory card slots support both CFexpress Type A and SD UHS-II cards for flexible and rapid file storage.

Technical Details

• Lens Mount: Sony E
• Camera Format: Full-Frame (1x Crop Factor)
• Pixels: Actual: 12.9 Megapixel, Effective: 12.1 Megapixel
• Maximum Resolution: 4240 x 2832
• Aspect Ratio: 1:1, 3:2, 4:3, 16:9
• Sensor Type: CMOS, 35.6 x 23.8 mm
• Image File Format: JPEG, Raw, HEIF
• Bit Depth: 14-Bit
• Image Stabilization: Sensor-Shift, 5-Axis

Recording Modes

H.265/XAVC HS 4:2:2 10-Bit:

• UHD 4K (3840 x 2160) at various frame rates [50 to 280 Mb/s]

H.264/XAVC S-I 4:2:2 10-Bit:

• UHD 4K (3840 x 2160) up to 59.94p [240 to 600 Mb/s]

External Recording Modes:

• Raw 16-Bit: 4.2K (4264 x 2408) up to 59.94p
• 4:2:2 10-Bit: UHD 4K at various frame rates

The Sony Alpha a7S III is the ultimate tool for professional videographers and photographers, offering unmatched performance in a compact, ergonomic design. Whether capturing stunning 4K video or high-resolution stills, this camera is built to exceed expectations.