Decision tools · Compare
A6400 vs A7R IV
Quick take: The A7R IV has the highest resolution at 61MP; the A6400 is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
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Verdictwhich should you buy?
A6400 — Content Creation & Vlogging: 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.
A7R IV — Landscape, Studio, Commercial: 61MP in a mirrorless body — the resolution benchmark.
Who should buy what
A6400 (2019)
is the right camera for you if…
- 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
A7R IV (2019)
is the right camera for you if…
- Landscape photographers who print large
- Studio shooters needing maximum detail
Full specificationsthe better value in each row is highlighted
| Specification | A6400Sony · 2019 | A7R IVSony · 2019 |
|---|---|---|
| Price | £749Best | £2,199 |
| Sensor | 24.2MP APS-C Exmor CMOS BSI | Full-frame BSI Exmor R CMOS 35mm |
| Resolution | 24.2MP | 61.0MPBest |
| Video | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion | 4K 30fps |
| Autofocus | Phase-detect, 425 points, real-time Eye AF & animal AF | 567-point phase-detect, real-time tracking |
| Stabilisation | No stabilisation | 5-axis IBIS, 5.5 stops |
| Burst Rate | 11fps mechanical, 8fps with AF trackingBest | 10fps |
| Battery Life | ~410 shots (CIPA) | 670 shots (CIPA)Best |
| Weight | 403g (with battery and card)Best | 665g (body only) |
| Dimensions | 120.0 × 66.9 × 59.7mm | 128.9 × 96.4 × 77.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | EVF 0.78× 5.76M-dot |
| Screen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots | 3.0" tilting touchscreen, 1.44M-dot |
| Mount | Sony E-mount | Sony E-Mount |
| Memory Cards | Single SD UHS-I | Dual SD UHS-II slots |
| Connectivity | Micro-USB, Wi-Fi, Bluetooth, NFC | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
A6400
A7R IV
Portrait
6.7/10
8.1/10
Street
7.3/10
6.2/10
Travel
6.9/10
6.4/10
Wedding & Events
5.6/10
7.8/10
Vlogging & Video
6.0/10
—
Filmmaking
5.1/10
6.4/10
Documentary
6.1/10
6.9/10
Sports & Action
6.9/10
7.4/10
Landscape
5.6/10
7.9/10
Wildlife
7.4/10
7.7/10
Casual
5.8/10
4.8/10
Food
6.1/10
7.4/10
Macro
5.2/10
6.5/10
Architecture
5.5/10
8.1/10
Astrophotography
6.0/10
6.9/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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