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EOS-1D X Mark IIIvs EOS Rvs EOS R5

GearFrame · Updated March 2026

Canon EOS-1D X Mark III Canon EOS-1D X Mark III (2020) Starting from £3500 new Best for Professional Sports, Wildlife & Press Photography View EOS-1D X Mark III
VS
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
Canon EOS R5 Canon EOS R5 (2020) Starting from £2499 new Best for Professional hybrid shooters, portrait & wildlife View EOS R5

GearScore™ Verdict — Which should you buy?

Professional Sports, Wildlife & Press Photography — EOS-1D X Mark III (2020): Canon's DSLR masterpiece — 20fps live view, 5.5K RAW, 191 cross-type AF points, and dual CFexpress. Almost certainly the finest optical viewfinder camera ever made.

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.

Professional Hybrid Shooters, Portrait & Wildlife — EOS R5 (2020): A landmark camera — 8K video and 45MP in one body set the standard for what mirrorless could be.

↓ Full specifications below

EOS-1D X Mark III (2020)

  • Sports and wildlife photographers with a Canon EF lens collection
  • Professionals who prefer the optical viewfinder experience
  • Press photographers who need 20fps, weather sealing, and Ethernet
  • Canon historians who want to mark the end of the EOS-1D DSLR era

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

EOS R5 (2020)

  • Professional photographers who need both resolution and video in one body
  • Wildlife and sports photographers who want top AF with 20fps burst
  • Hybrid shooters who need 8K or 4K/120p alongside high-resolution stills
  • R5 Mark II buyers on a budget — the R5 still delivers exceptional results

Quick take: The eos r5 has the highest resolution at 45mp; the eos r is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification EOS-1D X Mark III (2020)EOS R (2018)EOS R5 (2020)
Price £3,500 £799 £2,499
Sensor 20.1MP full-frame CMOS 30.3MP full-frame CMOS 45MP Full-Frame CMOS
Resolution 20.1MP 30.3MP 45.0MP
Video 5.5K RAW, 4K 60fps (crop), 4K 60fps (full-frame via firmware) 4K/30p (1.7× crop), 1080p/60p 8K RAW/30p, 4K/120p, 1080p/120p
Autofocus 191-point all cross-type OVF AF; 525-point Dual Pixel CMOS AF (Live View) Dual Pixel CMOS AF — 5655 AF areas, Eye AF Dual Pixel CMOS AF II — 1053 AF zones, subject/animal detection
Stabilisation None IBIS — up to 8 stops combined with IS lenses
Burst Rate 16fps mechanical, 20fps live view 8fps continuous (5fps with AF/AE) 12fps mechanical, 20fps electronic
Battery Life ~2850 shots (CIPA) ~350 shots (CIPA) ~320 shots (CIPA)
Weight 1250g (body only) 660g body only 650g (with battery)
Dimensions 158 × 167.6 × 82.6mm 135.8 × 98.3 × 84.4mm 138.5 × 97.5 × 88mm
Weather Sealed Yes Yes Yes
Viewfinder OVF 0.76× magnification, 100% coverage EVF, 3.69M dots, 0.71× magnification EVF, 5.76M dots, 0.76× magnification
Screen 3.2" fully articulating touchscreen, 4.15M dots 3.0" touchscreen, tilting 3.15" fully articulating touchscreen
Mount Canon EF Canon RF mount (full-frame) Canon RF mount
Memory Cards Dual CFexpress Type B slots Single SD UHS-II slot CFexpress Type B + SD UHS-II
Connectivity Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1 Gen 2, Ethernet USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack USB-C, Wi-Fi, Bluetooth, HDMI
Genre EOS-1D X Mark IIIEOS REOS R5
Sports & Action
10.0
Wildlife
9.0
9.0
Wedding & Events
9.0
Portrait
8.0
9.0
9.0
Vlogging & Video
7.0
4.0
9.0
Street
7.0
Landscape
7.0
9.0
9.0
Travel
7.0
Wedding
7.0
9.0
Sports
4.0
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 EOS-1D X Mark III prices → EOS R prices → EOS R5 prices →

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