CowboyStudio MA-C Coiled Remote Shutter for Canon EOS Digital Rebel XT, XTi, XSi, XS, T1i & Canon Powershot G10 Digital SLR Cameras Fully Compatible with Canon RS-60E3 Two stage release button: halfway pressing for auto focus complete pressing takes the picture Lock the button for long exposures or continuous shooting 100% compatible with RS-60E3