TT685 II TTL Speedlitevs A6400
Godox
TT685 II TTL Speedlite
Starting from £89 new
Best for Portrait, wedding & event photography
View TT685 II TTL Speedlite
GearScore™ Verdict — Which should you buy?
Portrait, Wedding & Event Photography — TT685 II TTL Speedlite: The best value TTL speedlite available. Full TTL, HSS and Godox X wireless at £89 — works seamlessly alongside a V1 Pro as a slave unit. The standard choice for reliable flash without overspending.
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.
Who should buy what
TT685 II TTL Speedlite
- Portrait photographers who want a second flash for two-light setups
- Wedding photographers who need a reliable backup speedlite
- Photographers new to flash who want TTL simplicity
- Anyone adding a second Godox light to an existing V1 Pro system
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 tt685 ii ttl speedlite is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | TT685 II TTL Speedlite | A6400 (2019) |
|---|---|---|
| Price | £89 | £899 |
| Sensor | — | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | — | 24.2MP |
| Video | — | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | — | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | — | None (no IBIS) |
| Burst Rate | — | 11fps mechanical, 8fps with AF tracking |
| Battery Life | — | ~410 shots (CIPA) |
| Weight | 420g (with batteries) | 403g (body, battery, card) |
| Dimensions | Standard speedlite form factor | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | No |
| Viewfinder | — | EVF, 2.36M dots, 0.70× magnification |
| Screen | — | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | — | Sony E-mount |
| Memory Cards | — | Single SD UHS-I |
| Connectivity | 2.4GHz Godox X wireless system (TTL, HSS, remote control) | Micro-USB, Wi-Fi, Bluetooth, NFC |
Suitability by genre
| Genre | TT685 II TTL Speedlite | A6400 |
|---|---|---|
| Video | — | |
| Street | — | |
| Portrait | — | |
| Travel | — | |
| Wildlife | — |
More comparisons with TT685 II TTL Speedlite
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