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BFvs Sony A9 III

GearFrame · Updated March 2026

Sigma BF Sigma BF (2025) Starting from £1799 new Best for Photographers who want to strip back every distraction View BF
VS
Sony Sony A9 III Sony Sony A9 III (2023) Starting from £5999 new Best for Sports & action professionals View Sony A9 III

GearScore™ Verdict — Which should you buy?

Photographers Who Want To Strip Back Every Distraction — BF (2025): The most radical camera in years — no dials, no buttons, just a flat aluminium body and total creative minimalism.

Sports & Action Professionals — Sony A9 III (2023): A paradigm-shifting camera — the global shutter eliminates every rolling shutter limitation that has constrained action photography for years.

↓ Full specifications below

BF (2025)

  • Photographers who find camera menus and dials a distraction from the creative process
  • L-mount system users who want the lightest, most minimal full-frame body available
  • Design enthusiasts who value the object quality and philosophy as much as the output
  • Sigma fp/fp L users ready for a more radical step toward minimal photography

Sony A9 III (2023)

  • Professional sports photographers who need zero blackout and 120fps burst
  • Wildlife photographers who demand the most advanced Sony AF available
  • Photojournalists who need flash sync at any shutter speed
  • A9 II owners upgrading to the world's first full-frame global shutter

Quick take: The sony a9 iii has the highest resolution at 25mp; the bf is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification BF (2025)Sony A9 III (2023)
Price £1,799 £5,999
Sensor 24MP full-frame BSI CMOS 24.6MP full-frame Exmor RS CMOS (global shutter)
Resolution 24.0MP 24.6MP
Video 4K/30p, 1080p/60p 4K/120p, 4K/60p, 1080p/240p
Autofocus Phase-detect AF — face and eye detection AI subject recognition AF, 759-point phase-detect
Stabilisation 5-axis IBIS — 7 stops 8-stop IBIS
Burst Rate 9fps electronic 120fps blackout-free electronic
Battery Life ~400 shots (CIPA) 530 shots (CIPA)
Weight 427g body only 703g body only
Dimensions 127.0 × 75.0 × 45.0mm 136.1 × 96.9 × 82.9mm
Weather Sealed Yes Yes
Viewfinder EVF 0.75× 3.68M-dot 0.64" Quad-XGA OLED EVF, 9.44M dots
Screen 3.15" fully articulating touchscreen — primary interface 3.2" fully articulating touchscreen
Mount L-mount (Leica/Panasonic/Sigma) Sony FE (E-mount)
Memory Cards Single UHS-II SD slot Dual CFexpress Type A / SD UHS-II
Connectivity USB-C, Wi-Fi, Bluetooth USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3
Genre BFSony A9 III
Street
9.0
Travel
9.0
4.0
Portrait
9.0
9.0
Landscape
7.0
Sports
4.0
Vlogging & Video
4.0
7.0
Sports & Action
9.0
Wildlife
9.0
Wedding & Events
9.0

GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →

⚡ Compare specs side by side BF prices → Sony A9 III prices →

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