Sony Alpha a7S III Full-Frame Mirrorless Camera

Exceptional 4K Video and Low-Light Performance

The Sony Alpha a7S III is a professional full-frame mirrorless camera built for filmmakers, content creators, and photographers who regularly work in challenging light. Its 12.1-megapixel back-illuminated sensor, powerful BIONZ XR processor, advanced autofocus, and sophisticated heat-management system deliver dependable performance for demanding productions.

With internal 4K recording at up to 120p, 10-bit 4:2:2 color, 16-bit RAW output, and outstanding high-ISO performance, the a7S III remains an exceptionally capable tool for professional video production.

🎥 Key Features

• 12.1MP full-frame Exmor R CMOS sensor

• Powerful BIONZ XR image processor

• Outstanding high-ISO and low-light performance

• UHD 4K recording at up to 120p

• Internal 10-bit 4:2:2 color recording

• Full-size HDMI connection with 16-bit RAW output

• S-Cinetone, S-Log2, and S-Log3 picture profiles

• Up to 15 stops of dynamic range

• 759-point phase-detection autofocus system

• Real-time Tracking and Real-time Eye AF

• 5-axis in-body image stabilization

• Dual CFexpress Type A/SD memory-card slots

• 9.44-million-dot electronic viewfinder

• Fully articulating touchscreen LCD

• Durable, dust- and moisture-resistant body

🌙 Outstanding Low-Light Image Quality

The a7S III’s 12.1-megapixel full-frame sensor uses large individual pixels to gather more light. This design provides excellent high-ISO performance, wide dynamic range, and reduced noise in dark environments.

Its standard sensitivity range extends from ISO 80 to 102,400 and can be expanded from ISO 40 to 409,600, making the camera particularly valuable for concerts, weddings, documentaries, astrophotography, and available-light productions.

🎬 Professional 4K Recording

The a7S III records full-frame UHD 4K video at frame rates up to 120p. High-frame-rate recording makes it possible to create smooth slow-motion footage while maintaining impressive image quality.

Internal 10-bit 4:2:2 recording preserves greater color information for editing and color grading. The camera supports efficient Long GOP formats as well as high-quality All-Intra recording for professional post-production workflows.

Recording at 4K 120p uses a slight image crop.

🎨 Flexible Color and RAW Workflows

Sony’s S-Cinetone profile produces pleasing color, natural skin tones, and a cinematic appearance directly from the camera. S-Log3 provides additional flexibility for productions requiring extensive color grading and maximum dynamic range.

For advanced external recording, the camera can output 16-bit RAW video data through its full-size HDMI connection to a compatible recorder.

🎯 Fast, Dependable Autofocus

The hybrid autofocus system features 759 phase-detection points covering a large portion of the imaging area. Real-time Tracking follows moving subjects, while Real-time Eye AF helps maintain critical focus on the eyes of people and many animals.

The autofocus system remains responsive in very low light, making it especially useful for documentary, event, wedding, and live-performance work.

🖐️ Advanced Image Stabilization

Five-axis in-body image stabilization helps reduce camera shake with a wide variety of Sony E-mount lenses. Active stabilization mode provides additional electronic correction for smoother handheld video when a slight crop is acceptable.

🌡️ Designed for Extended Recording

An internal heat-dissipation structure helps manage temperature during long recording sessions. This allows the a7S III to handle demanding 4K workflows while maintaining its compact mirrorless form.

Actual available recording time will depend on ambient temperature, camera settings, memory media, and other operating conditions.

💾 Flexible Dual Memory-Card Slots

Both memory-card slots accept either CFexpress Type A cards or standard UHS-I/UHS-II SD cards. Users can configure the slots for simultaneous backup, automatic overflow, separating stills and video, or recording different file types to different cards.

CFexpress Type A media may be required for certain high-data-rate recording modes.

🔊 Professional Audio and Connectivity

The a7S III includes microphone and headphone connections for monitoring and recording audio. Its Multi Interface Shoe supports compatible Sony digital audio accessories, including optional XLR adapter systems.

A full-size HDMI port, USB-C connection, Wi-Fi, and wired networking through a compatible USB adapter support professional monitoring, file transfer, streaming, and production workflows.

📦 What’s Included

• Sony Alpha a7S III camera body

• Sony NP-FZ100 rechargeable battery

• Battery charger

• Power cord

• Shoulder strap

• Body cap

• Accessory-shoe cap

• Cable protector

• Manufacturer documentation

Lens and memory card are sold separately.

⭐ Why Buy from Cameragraphics?

Cameragraphics is an authorized Sony dealer serving photographers and filmmakers since 1974. Visit us in Auburn, Alabama, or shop online with confidence knowing your equipment comes from an experienced photographic retailer committed to knowledgeable service and customer support.