EOS R100vs OM-D E-M10 IVvs 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.
Travel & Everyday — OM-D E-M10 IV (2020): Compact Micro Four Thirds body with built-in IBIS — ideal for travellers who want stability without bulk.
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-D E-M10 IV (2020)
- You're new to mirrorless and want a small, uncomplicated first camera to learn on
- You want excellent in-body stabilisation to steady handheld video and shake-prone shooting
- You're drawn to the Micro Four Thirds ecosystem and want to start at the entry level
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 om-d e-m10 iv is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | OM-D E-M10 IV (2020) | A6400 (2019) |
|---|---|---|---|
| Price | £529 | £469 | £899 |
| Sensor | 24.1MP APS-C CMOS | 20.3MP Micro Four Thirds Live MOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 20.3MP | 24.2MP |
| Video | 4K/30p (slight crop), 1080p/60p | 4K/30p, 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Phase-detect + contrast detect, 121 points | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | 5-axis IBIS, 4.5 stops | None (no IBIS) |
| Burst Rate | 6.5fps mechanical | 15fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~270 shots (CIPA) | ~360 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 356g (body, battery, card) | 383g body only | 403g (body, battery, card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 121.4 × 83.6 × 49.0mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | No | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | EVF, 2.36M dots, 0.46× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.0" tilting 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 | Single SD UHS-I slot | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB Micro-B, Bluetooth, Wi-Fi, micro HDMI | Micro-USB, Wi-Fi, Bluetooth, NFC |
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