Z6 IIvs A6400
Which should you buy?
All-Round Full-Frame Photography — Z6 II (2020): The Z6 II is the Nikon most photographers should buy. It's balanced across every discipline — stills, video, autofocus, weather sealing — without overpaying for megapixels you don't need. The Z-mount glass is superb.
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
Z6 II (2020)
- Nikon DSLR users ready to move to mirrorless
- Photographers who need a reliable all-rounder without specialising
- Video creators wanting 4K/60p in a weather-sealed body
- Enthusiasts who shoot everything from portraits to travel
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 z6 ii has the highest resolution at 24mp; the a6400 is the most affordable; only the z6 ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Z6 II (2020) | A6400 (2019) |
|---|---|---|
| Price | £1,699 | £899 |
| Sensor | 24.5MP Full-Frame BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.5MP | 24.2MP |
| Video | 4K/60p, 4K/30p (oversampled), 1080p/120p slow-motion | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect, 273 points, Eye AF, subject tracking | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 5 stops (up to 6 stops with VR lenses) | None (no IBIS) |
| Burst Rate | 14fps mechanical, 14fps electronic (12-bit RAW) | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~410 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 705g (body, battery, card) | 403g (body, battery, card) |
| Dimensions | 134.0 × 100.5 × 69.5mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF, 3.69M dots, 0.80× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2" tilting touchscreen, 2.1M dots | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Nikon Z-mount | Sony E-mount |
| Memory Cards | Dual card: 1× CFexpress Type B / XQD + 1× SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C (USB 3.2 Gen 2), Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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