Upgrade Guide
Sony A7R II→Sony A6400
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Strong upgrade
The A6400 improves across 3 key areas at a reasonable price gap. Most A7R II owners will notice the difference.
What's new in the A6400
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Burst rate11fps mechanical, 8fps with AF tracking vs 5fps
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Battery life~410 shots (CIPA) vs ~290 shots (CIPA)
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Generation4 years newer (2019 vs 2015)
Unchanged or similar
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Resolution24MP (down from 42MP — optimised for low light)
Suitability by genre
Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.
| Genre | A7R II | A6400 | |
|---|---|---|---|
| Portrait | -0.4 | ||
| Street | +1.5 | ||
| Travel | +1.1 | ||
| Wedding & Events | +0.1 | ||
| Filmmaking | -0.8 | ||
| Documentary | — | ||
| Sports & Action | +1.1 | ||
| Landscape | -0.8 | ||
| Wildlife | +0.7 | ||
| Casual | +1.9 | ||
| Food | -0.3 | ||
| Macro | -0.6 | ||
| Architecture | -0.9 | ||
| Astrophotography | — | ||
| Vlogging & Video | — |
Full spec comparison
| Spec | A7R II | A6400 | |
|---|---|---|---|
| Price | £420 used | £749 | |
| Released | 2015 | 2019 | ↑ |
| Sensor | 42.4MP Full-Frame BSI CMOS Exmor R | 24.2MP APS-C Exmor CMOS BSI | |
| Resolution | 42MP | 24MP | ↓ |
| Video | 4K/30p (S35 or full-frame), 1080p/120p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion | |
| Autofocus | 399 phase-detect + 25 contrast-detect AF points, face detection | Phase-detect, 425 points, real-time Eye AF & animal AF | |
| Stabilisation | IBIS — 5-axis, up to 4.5 stops (first A7R with IBIS) | No stabilisation | |
| Burst Rate | 5fps | 11fps mechanical, 8fps with AF tracking | ↑ |
| Battery Life | ~290 shots (CIPA) | ~410 shots (CIPA) | ↑ |
| Weight | 625g (with battery and card) | 403g (with battery and card) | ↑ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | EVF, OLED 2.36M dots, 0.78× magnification | EVF, 2.36M dots, 0.70× magnification | |
| Screen | 3.0" tilting LCD, 1.23M dots (no touch) | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots | |
| Mount | Sony FE (full-frame E-mount) | Sony E-mount | |
| Memory Cards | Single SD UHS-I slot | Single SD UHS-I |
Compare side-by-side
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