EOS R100vs Canon EOS R3vs A6400
Canon
Canon EOS R3 (2021)
From £5999
Best for Sports & photojournalism professionals
View Canon EOS R3
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.
Sports & Photojournalism Professionals — Canon EOS R3 (2021): The pinnacle of Canon's mirrorless lineup for speed — Eye Control AF and 30fps burst in the most rugged body Canon has ever produced.
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
Canon EOS R3 (2021)
- You shoot sport, motorsport, wildlife, or news at a professional level
- You need Canon's most reliable and fastest autofocus available
- You need extreme weather sealing for demanding shooting conditions
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 canon eos r3 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | Canon EOS R3 (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £529 | £5,999 | £899 |
| Sensor | 24.1MP APS-C CMOS | 24.1MP full-frame BSI stacked CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 24.1MP | 24.2MP |
| Video | 4K/30p (slight crop), 1080p/60p | 6K RAW, 4K/120p, 1080p/180p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Dual Pixel CMOS AF II with Eye Control AF | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | 8-stop IBIS | None (no IBIS) |
| Burst Rate | 6.5fps mechanical | 30fps electronic / 12fps mechanical | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~270 shots (CIPA) | 620 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 356g (body, battery, card) | 1015g body only | 403g (body, battery, card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 150.0 × 142.6 × 87.2mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | 0.76" OLED EVF, 5.76M dots, 120fps | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.2" fully articulating touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-mount | Canon RF | Sony E-mount |
| Memory Cards | Single SD UHS-II | Dual CFexpress Type B | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN | Micro-USB, Wi-Fi, Bluetooth, NFC |
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