Canon ST-E2 Shoe Mount Speedlite Transmitter
Compatible cameras include Type A EOS cameras (E- TTL, autoflash) and Type B EOS cameras (manual flash) Clip-on Speedlite transmitter with direct contacts Flash ratio control for A:B ratio: 1:8 to 8:1, in half-step increments or 13 steps Enabled with high-speed sync mode Infrared pulse transmission system Compatible cameras include Type A EOS cameras (E- TTL, autoflash) and Type B EOS cameras (manual flash) Clip-on Speedlite transmitter with direct contacts Flash ratio control for A:B ratio: 1