The phottix strato ttl flash trigger for canon ndash the newest addition to ever popular strato series of flash triggers and wireless remotes it provides an easy to use and affordable ttl flash triggering solution for photographers with the lcd display and quick change buttons adjustments are fast and easy high speed and second curtain sync are supported in this 4 channel 2 4 ghz transmitter and receiver set shoot at maximum shutter speeds of 18000 s triggering hot shoe fla