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EOS M3vs FX3

GearFrame · Updated March 2026

Canon EOS M3 Canon EOS M3 (2015) Starting from £150 new Best for Casual & Everyday View EOS M3
VS
Sony FX3 Sony FX3 (2021) Starting from £3799 new Best for Professional video, documentary & cinematic filmmaking View FX3

GearScore™ Verdict — Which should you buy?

Casual & Everyday — EOS M3 (2015): The EOS M3 was a meaningful upgrade over the original EOS M — bringing 24MP, a tilting touchscreen, and improved Hybrid CMOS AF III. Video tops out at 1080p/30p and burst shooting is modest, but for stills photographers wanting affordable APS-C quality, the M3 is a competent used-market option.

Professional Video, Documentary & Cinematic Filmmaking — FX3 (2021): The definitive run-and-gun cinema camera — A7S III sensor quality in a body built specifically for video professionals.

↓ Full specifications below

EOS M3 (2015)

  • Photographers who want affordable 24MP APS-C quality on a budget
  • Casual shooters who want a compact EF-M camera with a tilting screen
  • Users looking for an affordable entry into the Canon EF-M ecosystem
  • Used-market buyers wanting a capable but inexpensive mirrorless

FX3 (2021)

  • Professional videographers and filmmakers who need cinema-quality colour science in a compact body
  • Documentary and run-and-gun shooters who need 4K/120p and built-in XLR audio
  • Sony A7S III owners who want a purpose-built video body alongside their stills camera
  • Gimbal and drone operators who need a compact full-frame cinema camera

Quick take: The eos m3 has the highest resolution at 24mp; the eos m3 is the most affordable; only the fx3 is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification EOS M3 (2015)FX3 (2021)
Price £150 £3,799
Sensor 24.2MP APS-C CMOS 12.1MP full-frame BSI Exmor R CMOS (same as A7S III)
Resolution 24.2MP 12.1MP
Video 1080p/30p 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone
Autofocus Hybrid CMOS AF III (phase-detect + contrast-detect) Real-time tracking with subject recognition (human, animal)
Stabilisation 5-axis IBIS — 5 stops
Burst Rate 4.2fps 10fps mechanical, 10fps electronic
Battery Life ~250 shots (CIPA) ~640 shots (CIPA)
Weight 366g (body only) 715g body only (with XLR handle)
Dimensions 110.9 × 68.0 × 44.4mm 129.7 × 78.0 × 84.5mm
Weather Sealed No Yes
Viewfinder None (optional EVF-DC1 accessory) None — monitor/external EVF use only
Screen 3.0" tilting touchscreen, 1.04M dots 3.0" touchscreen, fully articulating
Mount Canon EF-M mount Sony FE mount (full-frame E-mount)
Memory Cards Single SD UHS-I slot Dual CFexpress Type A / SD UHS-II slots
Connectivity USB, Wi-Fi, NFC USB-C (10Gbps), full-size HDMI, XLR via handle, Bluetooth, Wi-Fi
Genre EOS M3FX3
Casual
8.0
Travel
7.5
4.0
Portrait
7.5
7.0
Street
7.0
4.0
Vlogging & Video
4.5
9.0
Sports & Action
4.0
Low Light
9.0
Wedding
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 M3 prices → FX3 prices →

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