EOS R100vs Leica SL3vs 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.
Professional & Luxury Hybrid Shooters — Leica SL3 (2024): Leica's most capable mirrorless — 60MP, 30fps burst, 8K ProRes, and 7.5-stop IBIS with L-mount's growing lens ecosystem.
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
Leica SL3 (2024)
- You want Leica image quality with the convenience of autofocus and interchangeable lenses
- You shoot portraits, commercial, or editorial and want the best Leica system camera
- You plan to use Leica M lenses via adapter alongside native SL glass
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 leica sl3 has the highest resolution at 60mp; the eos r100 is the most affordable; only the leica sl3 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | Leica SL3 (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £529 | £6,499 | £899 |
| Sensor | 24.1MP APS-C CMOS | 60MP full-frame BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 60.0MP | 24.2MP |
| Video | 4K/30p (slight crop), 1080p/60p | 8K/30p, 4K/60p, Apple ProRes | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Phase-detect AF with subject/face/eye detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | 7.5-stop IBIS | None (no IBIS) |
| Burst Rate | 6.5fps mechanical | 30fps electronic | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~270 shots (CIPA) | 410 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 356g (body, battery, card) | 875g body only | 403g (body, battery, card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 146.0 × 104.0 × 42.0mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | 0.78" OLED EVF, 5.76M dots | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.2" fixed touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-mount | Leica L-mount | Sony E-mount |
| Memory Cards | Single SD UHS-II | Dual SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C 3.1, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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