Canon EOS 90Dvs EOS R8vs Sony A9 III

GearFrame · Updated March 2026

Canon Canon EOS 90D Canon Canon EOS 90D (2019) From £849 Best for Sports, wildlife & DSLR enthusiasts View Canon EOS 90D
VS
Canon EOS R8 Canon EOS R8 (2023) From £1099 Best for Full-frame entry View EOS R8
VS
Sony Sony A9 III Sony Sony A9 III (2023) From £5999 Best for Sports & action professionals View Sony A9 III

Which should you buy?

Sports, Wildlife & Dslr Enthusiasts — Canon EOS 90D (2019): The best APS-C DSLR Canon ever made — 32MP, 10fps, weather sealing, and an optical viewfinder experience no mirrorless can replicate.

Full-Frame Entry — EOS R8 (2023): Canon's most affordable full-frame mirrorless — 4K/60p 10-bit and class-leading Dual Pixel AF at an accessible entry price.

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

Canon EOS 90D (2019)

  • You're invested in Canon EF DSLR lenses and don't want to switch systems
  • You shoot wildlife or sports and prefer an optical viewfinder
  • You want a mid-range DSLR upgrade without going mirrorless

EOS R8 (2023)

  • You want full-frame image quality on a tight budget
  • You shoot mainly in good light and can live without built-in stabilisation
  • You primarily shoot stills with occasional video

Sony A9 III (2023)

  • You shoot professional sport, motorsport, or action and need zero rolling shutter distortion
  • You need reliable high-speed flash sync for studio or on-location action work
  • You want the absolute pinnacle of Sony's action and sports camera technology

Quick take: The canon eos 90d has the highest resolution at 32mp; the canon eos 90d is the most affordable; only the canon eos 90d, sony a9 iii are weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Canon EOS 90D (2019)EOS R8 (2023)Sony A9 III (2023)
Price £849 £1,099 £5,999
Sensor 32.5MP APS-C CMOS (Dual Pixel AF) 24.2MP Full-frame BSI CMOS 24.6MP full-frame Exmor RS CMOS (global shutter)
Resolution 32.5MP 24.2MP 24.6MP
Video 4K/30p (1.6× crop), FHD/120p 4K/60p oversampled 10-bit, FHD/180p 4K/120p, 4K/60p, 1080p/240p
Autofocus Dual Pixel CMOS AF (live view), 45-point phase-detect (OVF) Dual Pixel CMOS AF II, 1053 zones, eye/face/subject tracking AI subject recognition AF, 759-point phase-detect
Stabilisation None (no IBIS) None (no IBIS) 8-stop IBIS
Burst Rate 10fps mechanical 6fps mechanical, 40fps electronic 120fps blackout-free electronic
Battery Life ~1300 shots (CIPA with OVF) ~220 shots (CIPA) 530 shots (CIPA)
Weight 701g body only 461g body only 703g body only
Dimensions 140.7 × 104.8 × 76.8mm 132.5 × 86.1 × 70.0mm 136.1 × 96.9 × 82.9mm
Weather Sealed Yes No Yes
Viewfinder Optical pentaprism, 100% coverage, 0.95× magnification EVF, 2.36M dots, 0.59× 0.64" Quad-XGA OLED EVF, 9.44M dots
Screen 3.0" vari-angle touchscreen 3.0" fully articulating touchscreen 3.2" fully articulating touchscreen
Mount Canon EF / EF-S Canon RF mount (full-frame) Sony FE (E-mount)
Memory Cards Dual SD UHS-II slots Single SD UHS-II slot Dual CFexpress Type A / SD UHS-II
Connectivity USB 2.0, Bluetooth, Wi-Fi USB-C, Bluetooth, Wi-Fi USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3
⚡ Compare specs side by side Canon EOS 90D prices → EOS R8 prices → Sony A9 III prices →

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