EOS R100vs OM-1 IIvs A6400
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.
Wildlife & Action — OM-1 II (2024): 120fps burst, 8-stop IBIS, and IP53 sealing — the most capable wildlife and action camera in the Micro Four Thirds world.
Content Creation & Vlogging — A6400 (2019): The best value APS-C Sony you can buy — especially used. Real-time Eye AF at this price point was transformative when it launched and still makes it one of the most reliable autofocus systems in the lineup.
Who should buy what
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
OM-1 II (2024)
- You shoot wildlife, birds, or fast action and want the best MFT autofocus available
- You need strong weather sealing without the weight of a full-frame sports body
- You're in the MFT system and want a flagship-level body upgrade
A6400 (2019)
- Vloggers and content creators who need a flip screen and reliable AF
- Photographers upgrading from a compact or smartphone
- Beginners who want room to grow into a full E-mount lens ecosystem
- Anyone prioritising autofocus performance at an accessible price
Quick take: The a6400 has the highest resolution at 24mp; the eos r100 is the most affordable; only the om-1 ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | OM-1 II (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £529 | £1,499 | £899 |
| Sensor | 24.1MP APS-C CMOS | 20.4MP Micro Four Thirds Stacked BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 20.4MP | 24.2MP |
| Video | 4K/30p (slight crop), 1080p/60p | 4K/120p Cinema4K, Apple ProRes RAW (with recorder) | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Quad-Pixel phase-detect, 1053 points, AI subject recognition (birds/animals) | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | 5-axis IBIS, 8.0 stops (Dual IS) | None (no IBIS) |
| Burst Rate | 6.5fps mechanical | 120fps electronic (blackout-free), 15fps mechanical | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~270 shots (CIPA) | ~520 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 356g (body, battery, card) | 561g body only | 403g (body, battery, card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 134.8 × 91.6 × 72.7mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | EVF, 5.76M dots, 0.83× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-mount | Micro Four Thirds | Sony E-mount |
| Memory Cards | Single SD UHS-II | Dual SD UHS-II slots | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Bluetooth, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC |
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