The Godox TT685S Thinklite TTL Flash will make it simple to create both basic and complex lighting setups thanks to its full support for Sony ADI / P-TTL, which includes high-speed sync and an integrated 2.4GHz radio system. With a powerful guide number of 197' at ISO 100 and 200mm, a zoom range of 20-200mm, and the ability to tilt from -7 to 90° and rotate 360°, it is an efficient lighting tool when mounted on a camera. The TT685S is a TTL-capable device that can function as a complete wireless master or slave device with TTL capabilities. Important Features Compatible with Sony ADI and P-TTL, this integrated 2.4GHz X wireless radio system has a guide number of 197' at ISO 100 and 200mm. Zoom Range: 20–200 mm (with panel, 14 mm).