Canon EOS 90Dvs EOS R50vs Pentax K-3 Mark 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 R50 Canon EOS R50 (2023) From £599 Best for Beginners & family View EOS R50
VS
Pentax Pentax K-3 Mark III Pentax Pentax K-3 Mark III (2021) From £1699 Best for DSLR enthusiasts & outdoor photographers View Pentax K-3 Mark 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.

Beginners & Family — EOS R50 (2023): Canon's most beginner-friendly RF body — Dual Pixel AF and beautiful colour science in an approachable package.

Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.

↓ 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 R50 (2023)

  • You're completely new to mirrorless cameras and want something uncomplicated
  • You create vertical content for TikTok, Instagram Reels, or YouTube Shorts
  • You want great autofocus without needing to understand complex menus

Pentax K-3 Mark III (2021)

  • You're a committed DSLR photographer with significant investment in Pentax glass
  • You shoot in extreme weather conditions and place build quality and reliability above everything
  • You prefer optical viewfinder performance and want the best modern APS-C DSLR available

Quick take: The canon eos 90d has the highest resolution at 32mp; the eos r50 is the most affordable; only the canon eos 90d, pentax k-3 mark iii are weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Canon EOS 90D (2019)EOS R50 (2023)Pentax K-3 Mark III (2021)
Price £849 £599 £1,699
Sensor 32.5MP APS-C CMOS (Dual Pixel AF) 24.2MP APS-C CMOS 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 32.5MP 24.2MP 25.7MP
Video 4K/30p (1.6× crop), FHD/120p 4K/30p (uncropped 4K/24p), FHD/60p 4K/30p, 1080p/60p
Autofocus Dual Pixel CMOS AF (live view), 45-point phase-detect (OVF) Dual Pixel CMOS AF II, face/eye/subject tracking SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation None (no IBIS) None (no IBIS) 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 10fps mechanical 12fps mechanical, 15fps electronic 12fps
Battery Life ~1300 shots (CIPA with OVF) ~380 shots (CIPA) 800 shots (CIPA)
Weight 701g body only 375g body only 820g body only
Dimensions 140.7 × 104.8 × 76.8mm 116.3 × 85.5 × 68.8mm 134.5 × 103.5 × 73.5mm
Weather Sealed Yes No Yes
Viewfinder Optical pentaprism, 100% coverage, 0.95× magnification EVF, 2.36M dots Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.0" vari-angle touchscreen 3.0" vari-angle touchscreen 3.2" tilting touchscreen
Mount Canon EF / EF-S Canon RF-S / RF Pentax KF-mount
Memory Cards Dual SD UHS-II slots Single SD UHS-II slot Dual SD UHS-II
Connectivity USB 2.0, Bluetooth, Wi-Fi USB-C, Bluetooth, Wi-Fi USB-C, Wi-Fi, Bluetooth
⚡ Compare specs side by side Canon EOS 90D prices → EOS R50 prices → Pentax K-3 Mark III prices →

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