Decision tools · Compare
A6400 vs A7R II
Quick take: The A7R II has the highest resolution at 42MP; the A7R II is the most affordable.
Where the A6400 wins
- Burst Rate: 11fps mechanical, 8fps with AF tracking
- Battery Life: ~410 shots (CIPA)
- Weight: 403g (with battery and card)
- Street: 7.3 vs 5.8
- Travel: 6.7 vs 5.6
Where the A7R II wins
- Cheaper new: £420 vs £749
- Resolution: 42.4MP
- Filmmaking: 5.9 vs 5.1
- Landscape: 6.4 vs 5.6
- Macro: 5.8 vs 5.2
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.
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
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 II — Portrait, Landscape & Studio Photography: The A7R II transformed the A7R series — adding IBIS, 4K video, BSI sensor tech, and phase-detect AF in one generation. A landmark Sony camera.
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 II (2015)
is the right camera for you if…
- Landscape and architecture photographers who want 42MP with IBIS for handheld shooting
- Portrait and studio photographers who need high resolution with improved AF reliability
- Sony FE system users who want a capable high-resolution body at a used price
- A7R I owners who need the stabilisation, 4K, and improved AF the original lacked
Full specificationsthe better value in each row is highlighted
| Specification | A6400Sony · 2019 | A7R IISony · 2015 |
|---|---|---|
| Price | £749 | £420 usedBest |
| Sensor | 24.2MP APS-C Exmor CMOS BSI | 42.4MP Full-Frame BSI CMOS Exmor R |
| Resolution | 24.2MP | 42.4MPBest |
| Video | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion | 4K/30p (S35 or full-frame), 1080p/120p |
| Autofocus | Phase-detect, 425 points, real-time Eye AF & animal AF | 399 phase-detect + 25 contrast-detect AF points, face detection |
| Stabilisation | No stabilisation | IBIS — 5-axis, up to 4.5 stops (first A7R with IBIS) |
| Burst Rate | 11fps mechanical, 8fps with AF trackingBest | 5fps |
| Battery Life | ~410 shots (CIPA)Best | ~290 shots (CIPA) |
| Weight | 403g (with battery and card)Best | 625g (with battery and card) |
| Dimensions | 120.0 × 66.9 × 59.7mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | EVF, OLED 2.36M dots, 0.78× magnification |
| Screen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots | 3.0" tilting LCD, 1.23M dots (no touch) |
| Mount | Sony E-mount | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-I | Single SD UHS-I slot |
| Connectivity | Micro-USB, Wi-Fi, Bluetooth, NFC | USB, Wi-Fi, NFC |
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 II
Portrait
6.7/10
7.1/10
Street
7.3/10
5.8/10
Travel
6.7/10
5.6/10
Wedding & Events
5.6/10
5.5/10
Vlogging & Video
5.8/10
—
Filmmaking
5.1/10
5.9/10
Documentary
6.1/10
6.1/10
Sports & Action
6.9/10
5.8/10
Landscape
5.6/10
6.4/10
Wildlife
7.4/10
6.7/10
Casual
5.8/10
3.9/10
Food
6.1/10
6.4/10
Macro
5.2/10
5.8/10
Architecture
5.5/10
6.4/10
Astrophotography
6.0/10
6.0/10
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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