A6400vs 11-20mm f/2.8 Di III-A RXD
Tamron
11-20mm f/2.8 Di III-A RXD (2021)
Starting from £599 new
Best for Landscape, astrophotography & architecture on Sony APS-C
View 11-20mm f/2.8 Di III-A RXD
GearScore™ Verdict — Which should you buy?
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.
Landscape, Astrophotography & Architecture On Sony Aps-C — 11-20mm f/2.8 Di III-A RXD (2021): The definitive ultra-wide zoom for Sony APS-C — f/2.8 at 11mm in a compact, affordable, weather-sealed package.
Who should buy what
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 11-20mm f/2.8 di iii-a rxd is the most affordable; only the 11-20mm f/2.8 di iii-a rxd is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | A6400 (2019) | 11-20mm f/2.8 Di III-A RXD (2021) |
|---|---|---|
| Price | £899 | £599 |
| Sensor | 24.2MP APS-C Exmor CMOS BSI | Sony E-mount (APS-C) |
| Resolution | 24.2MP | — |
| Video | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion | N/A — lens |
| Autofocus | Phase-detect, 425 points, real-time Eye AF & animal AF | Rapid eXtra-silent stepping Drive (RXD) — quiet and fast |
| Stabilisation | None (no IBIS) | None |
| Burst Rate | 11fps mechanical, 8fps with AF tracking | N/A |
| Battery Life | ~410 shots (CIPA) | N/A |
| Weight | 403g (body, battery, card) | 335g |
| Dimensions | 120.0 × 66.9 × 59.7mm | 73mm diameter × 86.2mm length |
| Weather Sealed | No | Yes |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | N/A |
| Screen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots | N/A |
| Mount | Sony E-mount | 67mm filter thread |
| Memory Cards | Single SD UHS-I | N/A |
| Connectivity | Micro-USB, Wi-Fi, Bluetooth, NFC | N/A |
Suitability by genre
| Genre | A6400 | 11-20mm f/2.8 Di III-A RXD |
|---|---|---|
| Video | — | |
| Street | — | |
| Portrait | — | |
| Travel | — | |
| Wildlife | — | |
| Landscape | — | |
| Astrophotography | — | |
| Architecture | — |
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