EOS R100vs FX3

GearFrame · Updated March 2026

Canon EOS R100 Canon EOS R100 (2023) Starting from £529 new Best for First camera / beginner photography View EOS R100
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?

First Camera / Beginner Photography — EOS R100 (2023): The R100 does the basics well at the lowest possible price point. Its main value is as a gateway into the Canon RF ecosystem — the lenses you buy now will work on any Canon body you upgrade to later. Modest ambitions, reliably met.

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 R100 (2023)

  • First-time camera buyers stepping up from a smartphone
  • Students and hobbyists wanting an affordable starting point
  • Anyone who wants to start investing in Canon RF glass on a budget
  • Casual photographers who don't need advanced video or speed

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 r100 has the highest resolution at 24mp; the eos r100 is the most affordable; only the fx3 is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification EOS R100 (2023)FX3 (2021)
Price £529 £3,799
Sensor 24.1MP APS-C CMOS 12.1MP full-frame BSI Exmor R CMOS (same as A7S III)
Resolution 24.1MP 12.1MP
Video 4K/30p (slight crop), 1080p/60p 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone
Autofocus Dual Pixel CMOS AF, face detection, subject tracking Real-time tracking with subject recognition (human, animal)
Stabilisation None (no IBIS) 5-axis IBIS — 5 stops
Burst Rate 6.5fps mechanical 10fps mechanical, 10fps electronic
Battery Life ~270 shots (CIPA) ~640 shots (CIPA)
Weight 356g (body, battery, card) 715g body only (with XLR handle)
Dimensions 116.3 × 85.5 × 68.8mm 129.7 × 78.0 × 84.5mm
Weather Sealed No Yes
Viewfinder EVF, 2.36M dots, 0.59× magnification None — monitor/external EVF use only
Screen 3.0" fixed touchscreen, 1.04M dots 3.0" touchscreen, fully articulating
Mount Canon RF-mount Sony FE mount (full-frame E-mount)
Memory Cards Single SD UHS-II Dual CFexpress Type A / SD UHS-II slots
Connectivity USB-C, Wi-Fi, Bluetooth USB-C (10Gbps), full-size HDMI, XLR via handle, Bluetooth, Wi-Fi
Genre EOS R100FX3
Portrait
9.0
7.0
Travel
7.0
4.0
Street
7.0
4.0
Video
7.0
Wildlife
4.0
Vlogging & Video
9.0
Low Light
9.0
Wedding
7.0
⚡ Compare specs side by side EOS R100 prices → FX3 prices →

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