The Phottix Odin II TTL Flash Trigger Transmitter adds wireless triggering and control to your Sony flash system. Equipped with a 2.4 GHz radio system, the Odin II transmitter will communicate and trigger radio-capable flash units at distances up to 100 m. It is also compatible with multi-system setups that can include the Odin TTL, Strato, and Strato II receivers as well as Mitros+, Indra360, and Indra 500 lights. New to the Odin II is an expansion of channels and the introduction of Digital ID which gives further control over channels 5-32 to eliminate interference with other systems. TTL communication between the camera and flash makes automatic exposures simple, and manual power and zoom control dials offer precise adjustments to more advanced users. Using the five groups, users can also control different groups and flashes with varying settings as well as mix and match TTL and manual units. Adjust your settings using the large LCD screen and control buttons. Additional features include both high-speed sync for TTL flashes as well as OverDrive Sync mode for manual studio strobes, making it possible to work at shutter speeds up to 1/8000 second. It is also possible to remotely control the modelling light of Indra TTL strobes as well as use an AF assist light when needed. A mini-USB port is included for firmware updates. This is the transmitter only - Receivers are not available for the Odin II for Sony. Phottix recommends using the Mitros+ for Sony to complete your system setup.