This remote release provides two modes of operation for reducing camera shake on super telephoto shots, macro-photography, and bulb exposures. A two-stage release button allows for auto-focus when pressed halfway, or releases the shutter to take photos when completely pressed. The button can be locked in place for long exposures or continuous shooting. The remote release is compatible with Canon RS-60E3 remote switch. Compatible with the following cameras CANON Powershot G11 CANON Powershot G10 CANON EOS 1000D(Rebel Xs) CANON EOS 550D(Rebel T2i) CANON EOS 500D(Rebel T1i) CANON EOS 450D(Rebel Xsi) CANON EOS 400D(Rebel Xti) CANON EOS 350D(Rebel Xt) CANON EOS 300D CANON EOS 300 CANON EOS 300V CANON EOS 50E CANON EOS 50D CANON EOS 50 CANON EOS 33 CANON EOS 30 Pentax K-7/K10D/K110D/K100D/K20D/K200D/Cs205 Pentax *ist D/DS/DS2/DL/DL2/K10 Pentax MZ-6, MZ-L, ZX-L Hasselblad H/H1/H2/H2D/H1D Contax 645/Nl/Nx/N/Digital/LA-50 Samsung GX-20 GX-10 GX-1L GX-1S