Upgrade Guide
Sony A6400→Sony A7 IV
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the A6400. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the A7 IV
-
Resolution33MP vs 24MP (+9MP)
-
Weather sealingAdded — fully sealed body
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Battery life~580 shots (CIPA) vs ~410 shots (CIPA)
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Generation2 years newer (2021 vs 2019)
Suitability by genre
| Genre | A6400 | A7 IV | |
|---|---|---|---|
| Video | — | ||
| Street | — | ||
| Portrait | — | ||
| Travel | — | ||
| Wildlife | — | ||
| Studio Portraits | — | ||
| Outdoor Portraits | — | ||
| Wedding & Events | — | ||
| Vlogging & Video | — | ||
| Landscape | — | ||
| Sports & Action | — |
Full spec comparison
| Spec | A6400 | A7 IV | |
|---|---|---|---|
| Price | £899 | £2,299 | |
| Released | 2019 | 2021 | ↑ |
| Sensor | 24.2MP APS-C Exmor CMOS BSI | 33MP Full-frame BSI Exmor R CMOS | |
| Resolution | 24MP | 33MP | ↑ |
| Video | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion | 4K/60p oversampled, 10-bit internal, S-Log3, S-Cinetone | |
| Autofocus | Phase-detect, 425 points, real-time Eye AF & animal AF | 759-point phase-detect, AI subject recognition | |
| Stabilisation | None (no IBIS) | 5-axis IBIS, 5.5 stops | |
| Burst Rate | 11fps mechanical, 8fps with AF tracking | 10fps mechanical, 30fps electronic | ↓ |
| Battery Life | ~410 shots (CIPA) | ~580 shots (CIPA) | ↑ |
| Weight | 403g (body, battery, card) | 659g body only | ↓ |
| Weather Sealed | No | Yes | ↑ |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | EVF, 3.69M dots, 0.78× magnification | |
| Screen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots | 3.0" vari-angle touchscreen | |
| Mount | Sony E-mount | Sony FE (full-frame E-mount) | |
| Memory Cards | Single SD UHS-I | Dual slots: CFexpress Type A + SD UHS-II |
Compare side-by-side
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