EOS R6 Mark IIvs Nikon Z9vs 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.
Professional Sports & Wildlife — Nikon Z9 (2021): The Z9 redefined what professional mirrorless could be — no mechanical shutter, 45MP stacked BSI, and 8K RAW in the most rugged Z body.
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
Nikon Z9 (2021)
- You shoot professionally and need a camera body that handles everything without compromise
- You're a sports, wildlife, or commercial photographer who demands the absolute best
- You want a camera body that will remain state-of-the-art for the next decade
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 nikon z9 has the highest resolution at 46mp; the a6400 is the most affordable; only the eos r6 mark ii, nikon z9 are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark II (2022) | Nikon Z9 (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £2,099 | £5,499 | £899 |
| Sensor | 24.2MP Full-frame BSI CMOS | 45.7MP full-frame BSI stacked CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.2MP | 45.7MP | 24.2MP |
| Video | 4K/60p 10-bit oversampled, 6K RAW out, FHD/180p | 8K/30p RAW, 4K/120p, ProRes RAW | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II, 6072 zones, deep-learning subject tracking | Subject detection AF, 493-point phase-detect | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 8.0 stops (coordinated with IS lenses) | 6-stop IBIS | None (no IBIS) |
| Burst Rate | 12fps mechanical, 40fps electronic | 20fps RAW / 120fps JPEG | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~760 shots (CIPA) | 740 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 670g body only | 1340g body only | 403g (body, battery, card) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 149.0 × 149.5 × 90.5mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes | No |
| Viewfinder | EVF, 3.69M dots, 0.76× magnification | 0.5" Quad-VGA OLED EVF, 3.69M dots, 120fps | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.2" tilting touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF mount (full-frame) | Nikon Z-mount | Sony E-mount |
| Memory Cards | Dual SD UHS-II slots | Dual CFexpress Type B / XQD | Single SD UHS-I |
| Connectivity | USB-C 3.1, Bluetooth, Wi-Fi | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN | Micro-USB, Wi-Fi, Bluetooth, NFC |
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