This TT685C camera flash applies to Canon EOS series cameras and is well compatible with E-TTL II autoflash. You can easily achieve a correct flash exposure even in complex light-changing environments. In E-TTL II mode, camera and flash work together to calculate the correct exposure for the subject and the background. In this mode, multiple TTL functions are available: FEC, HSS, second curtain sync, modeling flash, etc.
Guide No.: 60 (m ISO 100)
(1/1 output @ 200mm): 190 (feet ISO 100)
Recycle time: Approx. 0.1-2.6 seconds (eneloop Ni-MH batteries of Panasonic).
Color Temperature: 5600±200k
Flash Coverage: 20 to 200mm (14mm with wide panel)
Auto zoom (Flash coverage set automatically to match the lens focal length and image size)
Swinging/tilting flash head (bounce flash): 0 to 360° horizontally and -7° to 90 vertically
Flash Duration: 1/300 to 1/20000 seconds
Power Supply: AA batteries: Ni-MH batteries (recommended) or 4*LR6 alkaline batteries
Exposure control system: E-TTL II autoflash and manual flash
Flash exposure compensation (FEC): Manual. FEB: ±3 stops in 1/3 stop incremen(Manual FEC and FEB can be combined.)
Sync mode: High-speed sync (up to 1/8000 seconds), first-curtain sync, and second-curtain sync
Multi flash: Provided (up to 100 times, 199Hz)
Sync Triggering Mode: Hotshoe, 3.5mm sync line, Wireless control port