EOS R6 Mark IIvs Ricoh GR IIIxvs A6400
Which should you buy?
Portraits & Action — EOS R6 Mark II (2022): 40fps burst, 8-stop IBIS, and Canon's best-in-class Dual Pixel AF — exceptional for action, sports, and portrait work.
Street Portraits & Reportage — Ricoh GR IIIx (2021): APS-C in a shirt pocket with a 40mm perspective — the GR IIIx is the ideal street portrait compact for photographers who want a slightly tighter frame.
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 R6 Mark II (2022)
- You want a do-everything full-frame body for weddings and events
- You need reliable subject tracking across stills and fast-moving video
- You shoot both photos and video professionally and need a single body that handles both
- You want Canon's colour science with a modern mirrorless system
Ricoh GR IIIx (2021)
- You want the GR experience with a slightly tighter, more versatile field of view
- You shoot portraits, food, or street scenes where 40mm suits better than 28mm wide
- You want a premium compact that fits in a shirt pocket with better tonal rendering than a phone
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 a6400 is the most affordable; only the eos r6 mark ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark II (2022) | Ricoh GR IIIx (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £2,099 | £999 | £899 |
| Sensor | 24.2MP Full-frame BSI CMOS | 24.2MP APS-C CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.2MP | 24.2MP | 24.2MP |
| Video | 4K/60p 10-bit oversampled, 6K RAW out, FHD/180p | 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II, 6072 zones, deep-learning subject tracking | Hybrid contrast/phase-detect AF with subject detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 8.0 stops (coordinated with IS lenses) | 4-stop IBIS (Shake Reduction) | None (no IBIS) |
| Burst Rate | 12fps mechanical, 40fps electronic | 4fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~760 shots (CIPA) | 200 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 670g body only | 262g | 403g (body, battery, card) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 111.2 × 61.4 × 33.2mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No | No |
| Viewfinder | EVF, 3.69M dots, 0.76× magnification | None | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.0" fixed touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF mount (full-frame) | Fixed 40mm-equiv f/2.8 lens | Sony E-mount |
| Memory Cards | Dual SD UHS-II slots | Single SD UHS-I | Single SD UHS-I |
| Connectivity | USB-C 3.1, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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