TT685 II TTL Speedlitevs A7C

GearFrame · Updated March 2026

Godox TT685 II TTL Speedlite Godox TT685 II TTL Speedlite Starting from £89 new Best for Portrait, wedding & event photography View TT685 II TTL Speedlite
VS
Sony A7C Sony A7C (2020) Starting from £1299 new Best for Compact travel & content creation View A7C

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.

Compact Travel & Content Creation — A7C (2020): The A7C proves full-frame doesn't have to be bulky. Excellent battery life, reliable Eye AF and a vari-angle screen in a pocketable body is a compelling combination for travel and content creators. The A7C II improved on it, but the original remains a strong value buy.

↓ Full specifications below

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

A7C (2020)

  • Travel photographers who want full-frame in the smallest possible body
  • Content creators who need a flip screen and reliable Eye AF
  • Photographers upgrading from APS-C who want to keep a compact kit
  • Vloggers who need 4K and great battery life on the road

Quick take: The tt685 ii ttl speedlite is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification TT685 II TTL SpeedliteA7C (2020)
Price £89 £1,299
Sensor 24.2MP Full-Frame Exmor R BSI CMOS
Resolution 24.2MP
Video 4K/30p (oversampled), 1080p/120p slow-motion, S-Log2/S-Log3
Autofocus Phase-detect, 693 points, real-time Eye AF & animal AF
Stabilisation 5-axis IBIS, 5 stops
Burst Rate 10fps with AF/AE tracking
Battery Life ~740 shots (CIPA) — outstanding for a Sony mirrorless
Weight 420g (with batteries) 509g (body, battery, card)
Dimensions Standard speedlite form factor 124.0 × 71.1 × 59.7mm
Weather Sealed No No
Viewfinder None built-in — use rear screen or accessory EVF
Screen 3.0" vari-angle touchscreen, 921k dots
Mount Sony E-mount
Memory Cards Single SD UHS-II
Connectivity 2.4GHz Godox X wireless system (TTL, HSS, remote control) USB-C (USB 3.2 Gen 2), Wi-Fi, Bluetooth, NFC
Genre TT685 II TTL SpeedliteA7C
Travel
9.0
Video
9.0
Portrait
9.0
Street
9.0
Wildlife
7.0
⚡ Compare specs side by side TT685 II TTL Speedlite prices → A7C prices →

More comparisons with TT685 II TTL Speedlite

Camera family history