EOS Rvs Sony A9 III

GearFrame · Updated March 2026

Canon EOS R Canon EOS R (2018) Starting from £799 new Best for Entry to full-frame mirrorless & RF lens exploration View EOS R
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?

Entry To Full-Frame Mirrorless & Rf Lens Exploration — EOS R (2018): The RF mount's founding camera — 30MP, Dual Pixel CMOS AF, and the proof-of-concept that launched Canon's mirrorless era.

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

EOS R (2018)

  • Canon DSLR users wanting to enter the RF ecosystem at the lowest full-frame price
  • EF lens collectors who want an affordable RF body to use with the EF-RF adapter
  • Photographers stepping up from APS-C who want full-frame quality on a budget
  • RF system fans who want a second body without full EOS R6 pricing

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 eos r has the highest resolution at 30mp; the eos r is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification EOS R (2018)Sony A9 III (2023)
Price £799 £5,999
Sensor 30.3MP full-frame CMOS 24.6MP full-frame Exmor RS CMOS (global shutter)
Resolution 30.3MP 24.6MP
Video 4K/30p (1.7× crop), 1080p/60p 4K/120p, 4K/60p, 1080p/240p
Autofocus Dual Pixel CMOS AF — 5655 AF areas, Eye AF AI subject recognition AF, 759-point phase-detect
Stabilisation None 8-stop IBIS
Burst Rate 8fps continuous (5fps with AF/AE) 120fps blackout-free electronic
Battery Life ~350 shots (CIPA) 530 shots (CIPA)
Weight 660g body only 703g body only
Dimensions 135.8 × 98.3 × 84.4mm 136.1 × 96.9 × 82.9mm
Weather Sealed Yes Yes
Viewfinder EVF, 3.69M dots, 0.71× magnification 0.64" Quad-XGA OLED EVF, 9.44M dots
Screen 3.0" touchscreen, tilting 3.2" fully articulating touchscreen
Mount Canon RF mount (full-frame) Sony FE (E-mount)
Memory Cards Single SD UHS-II slot Dual CFexpress Type A / SD UHS-II
Connectivity USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3
Genre EOS RSony A9 III
Portrait
9.0
9.0
Landscape
9.0
Travel
7.0
4.0
Wedding
7.0
Vlogging & Video
4.0
7.0
Sports
4.0
Sports & Action
9.0
Wildlife
9.0
Wedding & Events
9.0
⚡ Compare specs side by side EOS R prices → Sony A9 III prices →

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