EOS R100vs EOS RPvs 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.
Entry Full-Frame Stills Photography — EOS RP (2019): An affordable gateway into the RF system. The RP makes sense as a stepping stone camera — if you're committed to Canon RF glass, this is the cheapest full-frame body to buy those lenses for. Just manage expectations on video and battery life.
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
EOS RP (2019)
- Canon users who want to start investing in RF glass affordably
- Stills photographers who shoot primarily in good light
- Anyone coming from a Canon DSLR wanting the RF system at low cost
- Travel photographers who prioritise compactness over video specs
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 eos rp has the highest resolution at 26mp; the eos r100 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | EOS RP (2019) | A6400 (2019) |
|---|---|---|---|
| Price | £529 | £799 | £899 |
| Sensor | 24.1MP APS-C CMOS | 26.2MP Full-Frame CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 26.2MP | 24.2MP |
| Video | 4K/30p (slight crop), 1080p/60p | 4K/24p (with 1.7× crop), 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Dual Pixel CMOS AF, 4779 manually selectable positions | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | None (no IBIS) | None (no IBIS) |
| Burst Rate | 6.5fps mechanical | 5fps mechanical | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~270 shots (CIPA) | ~250 shots (CIPA) — very limited | ~410 shots (CIPA) |
| Weight | 356g (body, battery, card) | 485g (body, battery, card) | 403g (body, battery, card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 132.5 × 85.0 × 70.0mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | No | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | EVF, 2.36M dots, 0.70× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.0" vari-angle touchscreen, 1.04M dots | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-mount | Canon RF-mount | Sony E-mount |
| Memory Cards | Single SD UHS-II | Single SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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