Lumix G9vs A7S III

GearFrame · Updated March 2026

Lumix Lumix G9 Lumix Lumix G9 (2017) Starting from £549 new Best for Wildlife, sports, travel View Lumix G9
VS
Sony A7S III Sony A7S III (2020) Starting from £2999 new Best for Professional video & low-light filmmaking View A7S III

GearScore™ Verdict — Which should you buy?

Wildlife, Sports, Travel — Lumix G9 (2017): The G9 showed that Micro Four Thirds could compete for fast-action stills.

Professional Video & Low-Light Filmmaking — A7S III (2020): If video is your primary discipline, the A7S III is the camera. 4K/120p at 10-bit in a weather-sealed body with a 9.44M dot EVF is an extraordinary package. The 12MP sensor isn't limiting for video — and it's usable at ISO 409,600 in a pinch.

↓ Full specifications below

Lumix G9 (2017)

  • Wildlife photographers who want fast burst and long telephoto reach at lower cost
  • MFT system users who prioritise stills over video

A7S III (2020)

  • Filmmakers and videographers who need 4K/120p at 10-bit
  • Event videographers who shoot in dark venues regularly
  • Documentary filmmakers who need reliable AF and weather sealing
  • Hybrid shooters where video is primary and stills are secondary

Quick take: The lumix g9 has the highest resolution at 20mp; the lumix g9 is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification Lumix G9 (2017)A7S III (2020)
Price £549 £2,999
Sensor Micro Four Thirds Live MOS 12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution 20.3MP 12.1MP
Video 4K 60fps, C4K 24fps 4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus 225-point contrast-detect DFD Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation 5-axis IBIS, 6.5 stops (6.0 stops dual IS) 5.5-stop IBIS
Burst Rate 20fps mechanical, 60fps electronic 10fps mechanical
Battery Life 400 shots (CIPA) ~600 shots (CIPA) / ~70min continuous 4K recording
Weight 658g (body only) 699g (body, battery, card)
Dimensions 136.9 × 97.3 × 91.6mm 128.9 × 96.9 × 80.8mm
Weather Sealed Yes Yes
Viewfinder EVF 0.83× 3.68M-dot OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen 3.0" fully articulating touchscreen, 1.04M-dot 3.0" vari-angle touchscreen, 1.44M dots
Mount Micro Four Thirds Sony E-mount
Memory Cards 2× SD UHS-II Dual CFexpress Type A / SD UHS-II (both slots)
Connectivity Wi-Fi, Bluetooth 4.2, USB-C, HDMI full-size USB-C (USB 3.2 Gen 2), full-size HDMI, Wi-Fi 6, Bluetooth
Genre Lumix G9A7S III
Video
9.0
Wildlife
9.0
Street
9.0
Portrait
7.0
Travel
7.0
⚡ Compare specs side by side Lumix G9 prices → A7S III prices →

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