The Canon ST-E3-RT Speedlite Transmitter can fire up to 15 compatible speedlite flashguns in three groups over distances of up to an impressive 30m. Radio-frequency control provides reliable operation even when direct line of sight is not possible. The ST-E3-RT can be used in almost any environment thanks to its weather proof construction
The GP-E2 unit adds a much-requested function to the EOS 7D (with a firmware update), EOS-1D X and EOS 5D Mark III cameras. It provides GPS data and time functions to these cameras to help photographers to track and sort their images.
The Canon ST-E2 Speedlite Transmitter is an integral part of the Canon flash system: on-camera wireless transmitter for Speedlites 420EX, 430EX / II, 550EX, 580EX / II, and Macrolites MR-14EX and MR-24EX.
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