EOS R100vs A7S II

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 A7S II Sony A7S II (2015) Starting from £799 new Best for Low-light video, documentary & available-light filmmaking View A7S II

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.

Low-Light Video, Documentary & Available-Light Filmmaking — A7S II (2015): A landmark in mirrorless history — the first Sony with IBIS and internal 4K, its low-light video capability still impresses today at a used-market price.

↓ 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

A7S II (2015)

  • Filmmakers and videographers who want legendary low-light performance at a used-price discount
  • Documentary shooters working in unpredictable available light conditions
  • A7S III shooters who want a second Sony FE body for backup or B-camera use
  • Budget-conscious video producers who want full-frame 4K with S-Log at an accessible price

Quick take: The eos r100 has the highest resolution at 24mp; the eos r100 is the most affordable; only the a7s ii is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification EOS R100 (2023)A7S II (2015)
Price £529 £799
Sensor 24.1MP APS-C CMOS 12.1MP full-frame BSI Exmor CMOS
Resolution 24.1MP 12.1MP
Video 4K/30p (slight crop), 1080p/60p 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3
Autofocus Dual Pixel CMOS AF, face detection, subject tracking 169 phase-detect + 25 contrast AF — limited by modern standards
Stabilisation None (no IBIS) 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS)
Burst Rate 6.5fps mechanical 5fps continuous
Battery Life ~270 shots (CIPA) ~370 shots (CIPA)
Weight 356g (body, battery, card) 584g body only
Dimensions 116.3 × 85.5 × 68.8mm 126.9 × 95.7 × 60.3mm
Weather Sealed No Yes
Viewfinder EVF, 2.36M dots, 0.59× magnification EVF, 2.36M dots, 0.71× magnification
Screen 3.0" fixed touchscreen, 1.04M dots 3.0" tilting LCD, 1.23M dots
Mount Canon RF-mount Sony FE mount (full-frame E-mount)
Memory Cards Single SD UHS-II Dual SD UHS-I slots
Connectivity USB-C, Wi-Fi, Bluetooth USB Micro-B, Bluetooth (via app), Wi-Fi, 3.5mm mic jack
Genre EOS R100A7S II
Portrait
9.0
7.0
Travel
7.0
Street
7.0
4.0
Video
7.0
Wildlife
4.0
Vlogging & Video
9.0
Low Light
9.0
Wedding
7.0
Sports
4.0
⚡ Compare specs side by side EOS R100 prices → A7S II prices →

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