Sony Alpha a7S III Full-Frame Mirrorless Camera

Sony Alpha a7S III Full-Frame Mirrorless Camera (Body Only)

Brand: Sony
Model Number: ILCE7SM3/B
Web Code: 14810471
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Get sensitivity and speed in stunning 4K for your stills and videos with the Sony Alpha 7S III full-frame mirrorless camera (body only). With a powerful BIONZ XR processing engine, its 12.1MP full-frame Exmor R CMOS sensor delivers ultra-clean images up to ISO 409,600, with more than 15 stops of dynamic range and fast hybrid autofocus with 759 phase detection AF points.

Manufacturer's Warranty

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Return Policy

30 days to return or exchange

Condition: Unopened, Opened (a 15% restocking fee will be applied)

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What's included:

  • Sony ILCE7SM3/B Full-Frame Mirrorless Interchangeable-Lens Camera (Body)
  • NP-FZ100 Rechargeable Battery
  • BC-QZ1 Battery Charger
  • Power Cord
  • Cable Protector
  • Shoulder Strap
  • Body Cap
  • Accessory Shoe Cap
  • Eyepiece Cup
  • USB-A to USB-C Cable (USB 3.2)

Powerful performance, small design

  • Camera body only
  • 12.1MP backside illuminated Exmor R CMOS sensor is fine-tuned for 4K images, and offers high resolution in a compact profile without compromising on sensitivity or speed
  • Full-frame format collects more light, allowing for sharp images even in low-light conditions
  • BIONZ XR processing engine offers incredible processing power

Never miss a moment

  • Shoots up to 4K 120p 10-bit 4:2:2 and full pixel readout in all record modes
  • Continuous shooting with selectable Hi+, Hi, Mid, and Lo modes for JPEG, RAW, RAW + JPEG, and other formats
  • Up to 10fps with continuous autofocus and exposure produces up to 1000 RAW+JPEG

4K movies made possible

  • 3840 x 2160 (4K UHD) max video resolution alongside 1920 x 1080 (1080p) resolution deliver amazing shooting quality and clear images
  • S-Log 3 comes in handy for movie recording with more than 15 stops of dynamic range (may require colour grading)
  • ISO sensitivity from 80-102,400 (standard, stills and movies), 40-409,600 (expanded, stills), and 80-409,600 (expanded, movies) ensures reduced noise for all your pictures and videos

Less blur for detailed captures

  • Mechanical 5-axis in-body image stabilization with selectable Active mode makes the image sensor shift around in order to reduce shakes during capture
  • Fast Hybrid AF with 759 phase detection AF points and 92% coverage smartly detects objects during assisted captures
  • Real-time Eye-AF and Real-time AF tracking down to EV-6 proves effective when photographing humans and animals
  • Seven adjustable AF transition speeds and five AF subject shift sensitivities

Next-gen OLED electronic viewfinder

  • 3" flip-out LCD monitor with touch menu and controls allow for easy navigation and access to settings
  • 9.44M Quad-XGA (QXGA) OLED eye-level electronic viewfinder stuns you with impeccable resolution for perfect previews
  • Vari-angle swivelling design makes it easy to manoeuvre the camera at multiple angles

Seamless file sharing, optimal storage

  • High-speed 2.4GHz and 5GHz Wi-Fi, NFC, and Bluetooth enabled for easy, fast wireless media sharing across devices
  • Compatible with SD, SDHC (UHS-I/II compliant), SDXC (UHS-I/II compliant), and CFexpress Type A memory cards for storing loads of pictures and footage

Easy integration with supported devices and more

  • USB Type-C port offers super-fast charging, while wired ethernet LAN (via optional LAN adapter, sold separately) and an HDMI-Type A port let you connect accessories
  • Multi Interface (MI) shoe with digital audio interface offers up to 4ch. 24bit capability when integrated with optional XLR-K3M digital microphone adapter kit (sold separately)
  • Long Z-battery life is extendable via USB Type-C with Power Delivery
  • Magnesium alloy body features dust- and moisture-resistant sealing
  • See Details & Specs for more information
Product Condition
Brand New
Camera Model
Sony Alpha 7S III
Camera Kit
Camera Body Only
Lens Mount
Sony E-Mount

Image Sensor

NFC Enabled
Sensor Type
Exmor R CMOS Sensor
Image Sensor Format
Full Frame
Effective Megapixels
12.1 MP
Total Pixels
12.9 MP
Colour Filter System
R, G, B Primary Colour
Colour Space
sRGB Standard (with sYCC gamut) and Adobe RGB Standard Compatible with TRILUMINOS Coluor. BT.2020 Standard. (When [HLG Still Image] Setting is set to [On].)
Low Pass Filter
Dust Reduction
Anti-Dust System - (Charge protection coating on Optical Filter and ultrasonic vibration mechanism)


Viewfinder Type
9.44M Quad-XGA OLED Tru-Finder (EVF) Electronic Viewfinder
Percentage Coverage
Effective Magnification
Approx. 0.90x (with 50mm lens at infinity, -1m-1)

Diopter Adjustment

Depth of Field Preview

LCD Features

LCD Size
2.95 in
LCD Resolution
1,440,000 dots
Swivel LCD
Live Preview

Auto Focus

AF Type
Fast Hybrid AF (Phase-detection AF / Contrast-detection AF)
Focusing Modes 1
AF-A (Automatic AF); AF-S (Single-shot AF); AF-C (Continuous AF); DMF (Direct Manual Focus); Manual Focus
AF Points
35mm Full Frame: 759 points (phase-detection AF); APS-C mode with FF lens: 345 points (phase-detection AF); with APS-C lens: 285 points (phase-detection AF) / 425 points (contrast-detection AF)
AF Point Selection
AF Assist Beam
AF Illuminator with Built-in LED. AF Illuminator Range: Approx. 0.3m - 3.0m (with FE 28-70mm F3.5-5.6 OSS lens)


Still images: ISO 80-102400 (ISO numbers up from ISO 40 to ISO 409600 can be set as expanded ISO range.); AUTO (ISO 80-12800, selectable lower limit and upper limit); Movies: ISO 80-102400 equivalent (ISO numbers up to ISO 409600 can be set as expanded ISO range)
White Balance Settings 1
Auto; Daylight; Shade; Cloudy; Incandescent; Fluorescent; Flash; Underwater; Color Temperature (2500 to 9900K) & Color Filter; Custom
White Balance Settings 2
Shutter AWB Lock: (Shut. Halfway Down / Cont. Shooting / Off)
Auto White Balance
White Balance Bracketing
Exposure Compensation
(+/- 5.0EV (1/3 EV; 1/2 EV steps selectable); With exposure compensation dial: +/- 3EV (1/3 EV steps)


Shutter Type
Electronically-Controlled; Vertical-Traverse; Focal-Plane Type
Shutter Speeds
Still images: 1/8000 to 30 sec; Bulb; Movies: 1/8000 to 1/4 (1/3 steps); up to 1/60 in AUTO mode (up to 1/30 in Auto slow shutter mode)
Shutter Lag
Yes (10 sec. delay / 5 sec. delay / 2 sec. delay / Continuous self-time / Bracketing self-timer)


Drive Modes
Single Shooting; Continuous shooting (Hi+/Hi/Mid/Lo selectable); Self-timer; Self-timer (Cont.); Bracket: Single; Bracket: Cont.; White Balance bracket; DRO bracket
Max Burst Jpeg
Hi+: 10 fps; Hi: 8 fps; Mid: 6 fps; Lo: 3 fps
Max Burst Raw
Hi+: 10 fps; Hi: 8 fps; Mid: 6 fps; Lo: 3 fps
Max Burst Raw+JPEG
Hi+: 10 fps; Hi: 8 fps; Mid: 6 fps; Lo: 3 fps
Max Burst Other Format
Hi+: 10 fps; Hi: 8 fps; Mid: 6 fps; Lo: 3 fps


Built-in Flash Type


Video Output Format
Video Modes
3840 x 2160 (4K UHD); 1920 x 1080 (1080p)
Movie File Formats
Movie Video Compression
Movie Audio Compression
LPCM 2ch(48kHz 16bit), LPCM 2ch(48kHz 24bit), LPCM 4ch(48kHz 24bit), MPEG-4 AAC-LC 2ch
Max Video Resolution
3840 x 2160 (4K UHD)


Image Playback Modes 1
Single (with or without shooting information Y RGB histogram & highlight / shadow warning); Index view; Enlarged display mode (L: 10.6x, M: 6.92x, S: 5.32x); Auto Review; Image orientation; Folder selection (Date / Still / Movie); Protect; Rating; Display as Group
Movie Playback Modes
Single (with or without shooting information Y RGB histogram & highlight / shadow warning); Index view; Enlarged display mode (L: 10.6x, M: 6.92x, S: 5.32x); Auto Review; Image orientation; Folder selection (Date / Still / Movie); Protect; Rating; Display as Group

Storage & Interface

Card Slot
Slot 1: Multi slot for SD (UHS-I/II compliant) memory card / CFexpress Type A card; Slot 2: Multi slot for SD (UHS-I/II compliant) memory card / CFexpress Type A card
Storage Media
SD Memory Card; SDHC Memory Card (UHS-I/II compliant); SDXC Memory Card (UHS-I/II compliant); CFexpress Type A Memory Card
Data Interface
USB Type-C Terminal SuperSpeed USB 5Gbps (USB 3.2) compatible) - Optional LAN adapter connectable
Video Interface
Guided Shooting Mode
Languages Supported
English; French; Italian; Spanish

Body Features

Stabilized Body
Body Colour
Intelligent Shoe
Yes, Multi Interface Shoe with Digital Audio Interface
Cable Release
With Optional PC Remote, Sync Terminal
Weather Sealed


Battery Type
InfoLITHIUM Rechargeable Battery
Included Battery Model
Back-up Battery
Power Saving Modes

Physical Features

12.89 cm
9.69 cm
6.97 cm
614 g
If you find a lower price with another retailer before you buy (or within 30 days of purchase), we’ll gladly match that price. If our own price is reduced within 30 days of purchase, we’ll match it and refund you the difference. Conditions and exclusions apply.