EOS R10vs Pentax K-3 Mark IIIvs A6400
Pentax
Pentax K-3 Mark III (2021)
From £1699
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
Which should you buy?
Beginners & Vlogging — EOS R10 (2022): Canon's most affordable RF body — Dual Pixel AF and a vari-angle screen in a compact, lightweight package.
Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.
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 R10 (2022)
- You're buying your first serious interchangeable-lens camera
- You want reliable animal and people tracking without a steep learning curve
- You want an APS-C body with access to Canon's full RF lens range
Pentax K-3 Mark III (2021)
- You're a committed DSLR photographer with significant investment in Pentax glass
- You shoot in extreme weather conditions and place build quality and reliability above everything
- You prefer optical viewfinder performance and want the best modern APS-C DSLR available
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 pentax k-3 mark iii has the highest resolution at 26mp; the eos r10 is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R10 (2022) | Pentax K-3 Mark III (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £699 | £1,699 | £899 |
| Sensor | 24.2MP APS-C CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.2MP | 25.7MP | 24.2MP |
| Video | 4K/30p (slight crop), FHD/120p | 4K/30p, 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II, eye/face/subject tracking | SAFOX 13 phase-detect, 101-point (25 cross-type) | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | 5.5-stop 5-axis IBIS (Shake Reduction III) | None (no IBIS) |
| Burst Rate | 15fps mechanical, 23fps electronic | 12fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~430 shots (CIPA) | 800 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 429g body only | 820g body only | 403g (body, battery, card) |
| Dimensions | 122.5 × 87.8 × 83.4mm | 134.5 × 103.5 × 73.5mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots | Optical pentaprism, 100% coverage, 1.05× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" vari-angle touchscreen | 3.2" tilting touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-S / RF | Pentax KF-mount | Sony E-mount |
| Memory Cards | Single SD UHS-II slot | Dual SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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