NOTE: Dark circle/dead pixels on LCD screen.
The Godox TT685C Thinklite TTL Flash for Canon Cameras is a full-featured on-camera speedlite built for photographers who want reliable TTL automation paired with advanced wireless flash control, giving them the versatility of a much pricier first-party flash system at a fraction of the cost. It’s designed for compatibility with Canon EOS series DSLR cameras, supporting Canon’s E-TTL/E-TTL II autoflash system for simple, automated exposure.
The flash offers a powerful guide number of 197′ (60m) at ISO 100 and 200mm, along with a zoom head covering a 20-200mm range, extendable to 14mm coverage with a pull-out wide-angle diffusion panel for use with a variety of lenses. The flash head tilts from -7 to 90 degrees and rotates a full 360 degrees, giving photographers flexible bounce-flash positioning for softer, more directional light off walls or ceilings. Flash duration ranges from 1/300 to 1/20,000 second, and exposure can be fine-tuned manually with flash exposure compensation adjustable in 1/3-stop increments across a ±3 stop range.
A built-in 2.4GHz X wireless radio system allows the TT685C to function as either a master or slave unit with full TTL functionality, giving photographers the ability to trigger and control compatible Godox flashes and monolights remotely, or to be triggered itself by another X System-enabled transmitter, with a working range of up to 328 feet across 32 channels and five groups. High-speed sync up to 1/8000 second is supported, along with first- and second-curtain sync, useful for balancing flash output against bright ambient light or freezing motion with wide apertures outdoors.
Handling centers on a convenient dot-matrix LCD panel, giving photographers a clear overview of current settings, power levels, and wireless configuration, along with a hot-shoe mount, a 3.5mm sync port for wired triggering, and a wireless control port for attaching optional remote accessories. The flash runs on four AA batteries (Ni-MH recommended), with a recycle time of approximately 0.1-2.6 seconds, and includes an auto-power-off feature after 90 seconds of inactivity to conserve battery life. The package typically includes a hot-shoe stand, protective carrying case, color filter, and diffuser.
Key Features
– On-camera TTL speedlite for Canon E-TTL/E-TTL II compatible cameras
– Guide number of 197′ (60m) at ISO 100, 200mm
– Zoom head coverage 20-200mm (14mm with wide-angle panel)
– Tilts -7° to 90°, rotates 360° for bounce flash
– Flash duration 1/300 to 1/20,000 sec
– High-speed sync up to 1/8000 sec
– First- and second-curtain sync
– Flash exposure compensation (±3 stops, 1/3-stop increments)
– Built-in 2.4GHz X wireless radio system (master/slave, TTL capable)
– Wireless range up to 328′; 32 channels, 5 groups
– Dot-matrix LCD panel
– 3.5mm sync port and wireless control port
– Runs on 4 AA batteries (Ni-MH recommended)
– Recycle time of approximately 0.1-2.6 seconds
– Auto power-off after 90 seconds of inactivity

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