EOS RPvs X-E4vs 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.
Compact Street & Travel Photography — X-E4 (2021): The X-E4 is for photographers who want the minimum camera that still delivers maximum image quality. If you love shooting from the rear screen and want the smallest possible X-mount body, this is your camera. If you need a viewfinder or IBIS, look at the X-S20 or X-T30 II.
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
X-E4 (2021)
- Street photographers who prioritise portability and discretion
- Travel photographers packing minimally
- Fujifilm fans who shoot primarily from the rear screen
- Anyone who wants the X-Trans sensor in the smallest possible body
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 x-e4 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS RP (2019) | X-E4 (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £799 | £699 | £899 |
| Sensor | 26.2MP Full-Frame CMOS | 26.1MP APS-C X-Trans CMOS IV | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 26.2MP | 26.1MP | 24.2MP |
| Video | 4K/24p (with 1.7× crop), 1080p/60p | 4K/30p, 1080p/240p slow-motion, F-Log | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, 4779 manually selectable positions | Phase-detect, 425 points, face/Eye detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | None (no IBIS) | None (no IBIS) |
| Burst Rate | 5fps mechanical | 8fps mechanical, 20fps electronic | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~250 shots (CIPA) — very limited | ~460 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 485g (body, battery, card) | 364g (body only) | 403g (body, battery, card) |
| Dimensions | 132.5 × 85.0 × 70.0mm | 121.3 × 72.9 × 32.7mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | No | No |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | None — rear screen only (EVF accessory available) | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" vari-angle touchscreen, 1.04M dots | 3.0" fixed touchscreen, 1.62M dots | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-mount | Fujifilm X-mount | Sony E-mount |
| Memory Cards | Single SD UHS-II | Single SD UHS-I | 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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