EOS RPvs OM-1 IIvs A6400
Which should you buy?
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.
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 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
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 eos rp has the highest resolution at 26mp; the eos rp is the most affordable; only the om-1 ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS RP (2019) | OM-1 II (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £799 | £1,499 | £899 |
| Sensor | 26.2MP Full-Frame CMOS | 20.4MP Micro Four Thirds Stacked BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 26.2MP | 20.4MP | 24.2MP |
| Video | 4K/24p (with 1.7× 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, 4779 manually selectable positions | 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 | 5fps mechanical | 120fps electronic (blackout-free), 15fps mechanical | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~250 shots (CIPA) — very limited | ~520 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 485g (body, battery, card) | 561g body only | 403g (body, battery, card) |
| Dimensions | 132.5 × 85.0 × 70.0mm | 134.8 × 91.6 × 72.7mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | EVF, 5.76M dots, 0.83× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" vari-angle 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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