Vivitar Wired Remote Shutter Release for Canon EOS and Digital Pentax and Samsung Cameras Compatible with Canon EOS Digital Rebel XT, XTi, XS, XSi, 300D, 350D, 400D, T2i, 60D Compatible with Pentax dSLR Models *ist, *istD, *istDS, *istDL, K100, K100D, K110D, K200D, K10D, K20D, K7 3 foot long cord -Extensions are available Works just like your camera shutter release and can be locked on for "Bulb" exposures or Continuous shooting