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EOS Mvs EOS M6 Mark IIvs Canon EOS R3

GearFrame · Updated March 2026

Canon EOS M Canon EOS M (2012) Starting from £80 new Best for Canon mirrorless history & EF-M collectors View EOS M
VS
Canon EOS M6 Mark II Canon EOS M6 Mark II (2019) Starting from £600 new Best for Portrait & Street View EOS M6 Mark II
VS
Canon Canon EOS R3 Canon Canon EOS R3 (2021) Starting from £5999 new Best for Sports & photojournalism professionals View Canon EOS R3

GearScore™ Verdict — Which should you buy?

Canon Mirrorless History & Ef-M Collectors — EOS M (2012): Canon's first mirrorless — a historic body that broke new ground with touch-AF and EF-M, but its sluggish contrast-detect system quickly became its Achilles heel.

Portrait & Street — EOS M6 Mark II (2019): The M6 Mark II is the peak of the EF-M system — 32.5MP, 14fps, and Dual Pixel CMOS AF II in a compact rangefinder-style body. No built-in EVF is the main compromise, but the optional EVF-DC2 resolves this. An outstanding used-market buy for photographers who want high resolution and fast AF in a genuinely compact body.

Sports & Photojournalism Professionals — Canon EOS R3 (2021): The pinnacle of Canon's mirrorless lineup for speed — Eye Control AF and 30fps burst in the most rugged body Canon has ever produced.

↓ Full specifications below

EOS M (2012)

  • Canon shooters who want the camera that started Canon's mirrorless story
  • Budget first-time mirrorless buyers who already own EF/EF-S glass
  • Collectors of significant digital camera milestones

EOS M6 Mark II (2019)

  • Enthusiast photographers who want the best the EF-M system offers
  • Portrait and landscape photographers wanting high resolution in a compact body
  • Street photographers who want a fast, discreet, high-resolution camera
  • Used-market buyers seeking top EF-M performance

Canon EOS R3 (2021)

  • Professional sports and photojournalism photographers
  • Canon users who need the fastest burst and most reliable AF in the system
  • R5 users who want a pro-grade grip and faster shooting speed
  • Event photographers who need eye-controlled AF and dual card slots

Quick take: The eos m6 mark ii has the highest resolution at 32mp; the eos m is the most affordable; only the canon eos r3 is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification EOS M (2012)EOS M6 Mark II (2019)Canon EOS R3 (2021)
Price £80 £600 £5,999
Sensor 18MP APS-C CMOS 32.5MP APS-C CMOS (Dual Pixel) 24.1MP full-frame BSI stacked CMOS
Resolution 18.0MP 32.5MP 24.1MP
Video 1080p 30fps 4K/30p (1.56× crop), 1080p/120p 6K RAW, 4K/120p, 1080p/180p
Autofocus Contrast-detect AF only — notoriously slow Dual Pixel CMOS AF II with face and eye detection Dual Pixel CMOS AF II with Eye Control AF
Stabilisation 8-stop IBIS
Burst Rate 4fps 14fps (mechanical and electronic) 30fps electronic / 12fps mechanical
Battery Life ~230 shots (CIPA) ~305 shots (CIPA) 620 shots (CIPA)
Weight 262g (body only) 408g (body only) 1015g body only
Dimensions 108.6 × 66.5 × 32.3mm 119.6 × 70.0 × 49.2mm 150.0 × 142.6 × 87.2mm
Weather Sealed No No Yes
Viewfinder None (optional EVF accessory) None (optional EVF-DC2 accessory) 0.76" OLED EVF, 5.76M dots, 120fps
Screen 3.0" fixed touchscreen, 1.04M dots 3.0" fully articulating touchscreen, 1.04M dots 3.2" fully articulating touchscreen
Mount Canon EF-M mount Canon EF-M mount Canon RF
Memory Cards 1× SD/SDHC/SDXC Single SD UHS-II slot Dual CFexpress Type B
Connectivity USB 2.0 USB, Wi-Fi, Bluetooth USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN
Genre EOS MEOS M6 Mark IICanon EOS R3
Casual
7.0
8.5
Travel
6.0
8.5
4.0
Street
6.0
8.5
Portrait
6.0
8.5
Vlogging & Video
5.0
7.0
7.0
Landscape
8.5
Wildlife
7.0
9.0
Sports & Action
7.5
9.0
Photojournalism
9.0
Wedding & Events
7.0

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

⚡ Compare specs side by side EOS M prices → EOS M6 Mark II prices → Canon EOS R3 prices →

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