The Hahnel Combi TF Remote Control & Flash Trigger for Canon is a compact & lightweight wireless remote control & gives you the ability to control shutter release, auto focus, continuous shooting, bulb mode & 4-second timer delay. Used in conjunction with a tripod this wireless remote is particularly ideal for wildlife & sports photography but can be used for landscape photography too. You can also use the Hahnel Combi TF as a remote flash trigger, use multiple receivers to fire several portable flash units or studio lights simultaneously, perfect for a wireless studio environment. The Combi TF uses high-tech, reliable FSK 2.4 G Hz frequency, which is a worldwide licence free technology. Compatibility: Canon: EOS 1000D, 550D, 500D, 450D, 400D, 350D, 300D, 50D, 40D, 30D, 20D, 10D, 7D, 5D, 5D Mark II, 1D, 1 Ds Mark III, IV, Power Shot G10, G11 Pentax: K-7, K10, K20, K100, K200 Samsung: GX10, GX20