Canon ST-E3-RT Speedlite Transmitter Flash

I am selling my Canon ST-E3-RT Speedlite Transmitter due to switching to Profoto. The Canon ST-E3-RT Speedlite Transmitter is part of the E-TTL II system and allows you to control up to 15 speedlites at distances up to 30 meters. It is also possible to remotely control up to 15 cameras to create a synchronized shooting sequence. The 2.4 GHz RF control is easy and reliable: even if there is no direct line of sight between the transmitter and the flash. This gives you an incredible amount of freedom of movement! Versatile functionality: no matter how the lighting is set up, you can create a complex lighting arrangement where the power can be adjusted from 1/1 to 1/128 in 1/3 stops, or use the automatic exposure system. The transmitter is compatible with TTL, E-TTL, and E-TTL II. You can use pre-flashes, flash exposure lock, flash exposure compensation, and flash exposure bracketing. The flashes you want to control can be divided into up to five groups. You also have access to fifteen different channels. Like Canon’s professional L-series lenses, the ST-E3-RT is equipped with dust- and moisture-resistant seals. The clear buttons and the easily readable backlit LCD display contribute to user-friendliness. The flash hot shoe is made of durable metal. The transmitter is powered by two optional AA batteries. These are not included but can be found under the