JYC Shutter Release SR-C1 for CANON G10 G11 G12 G15 1000D(XS) 650D(T4i) 600D(T3i) 550D(T2i) 500D(T1i) 450D(XSi) 400D(XTi) 350D(XT) G15 G1X SX50 as RS60-E3 100% compatible with CANON RS-60E3(RS60-E3),PENTAX CS-205 Shutter Release. The release button reacts fast and fine. Two stage release button: Halfway pressing for autofocus, complete pressing takes the picture. Lock the button for long exposures or continuous shooting.