EOS R6 Mark IIvs A6400vs A7C II
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.
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.
Full-Frame Hybrid — A7C II (2023): Full-frame AI autofocus in the most compact body available — the best camera under £1,500 for hybrid shooters.
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
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
A7C II (2023)
- You want full-frame image quality in the most compact body possible
- You travel constantly and need a serious camera that doesn't weigh down your bag
- You're a portrait or lifestyle photographer who shoots on the move
- You create content for social media or YouTube and want full-frame quality in a vlog-friendly form
Quick take: The a7c ii has the highest resolution at 33mp; 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) | A6400 (2019) | A7C II (2023) |
|---|---|---|---|
| Price | £2,099 | £899 | £1,499 |
| Sensor | 24.2MP Full-frame BSI CMOS | 24.2MP APS-C Exmor CMOS BSI | 33MP Full-frame Exmor R BSI CMOS |
| Resolution | 24.2MP | 24.2MP | 33.0MP |
| Video | 4K/60p 10-bit oversampled, 6K RAW out, FHD/180p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion | 4K/60p oversampled, S-Log3, 10-bit internal |
| Autofocus | Dual Pixel CMOS AF II, 6072 zones, deep-learning subject tracking | Phase-detect, 425 points, real-time Eye AF & animal AF | 759-point phase-detect, AI subject recognition |
| Stabilisation | 5-axis IBIS, 8.0 stops (coordinated with IS lenses) | None (no IBIS) | 5-axis IBIS, 7.0 stops |
| Burst Rate | 12fps mechanical, 40fps electronic | 11fps mechanical, 8fps with AF tracking | 10fps mechanical, 30fps electronic |
| Battery Life | ~760 shots (CIPA) | ~410 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 670g body only | 403g (body, battery, card) | 514g body only |
| Dimensions | 138.4 × 98.4 × 88.4mm | 120.0 × 66.9 × 59.7mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | No | No |
| Viewfinder | EVF, 3.69M dots, 0.76× magnification | EVF, 2.36M dots, 0.70× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots | 3.0" vari-angle touchscreen |
| Mount | Canon RF mount (full-frame) | Sony E-mount | Sony FE (full-frame E-mount) |
| Memory Cards | Dual SD UHS-II slots | Single SD UHS-I | Dual slots: SD UHS-II + CFexpress Type A |
| Connectivity | USB-C 3.1, Bluetooth, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC | USB-C (3.2), Bluetooth, Wi-Fi |
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