Pixel Remote Shutter Release Control compatible with SONY RM-S1AM, fits SONY A100, A200, A300, A350, A450, A500, A550, A560, A580, A700, A850, A900, A33, A55; KONICA MINOLTA Maxxum 7D, Maxxum 5D This Remote Control is a replacement for SONY RM-S1AM Fits SONY A100, A200, A300, A350, A450, A500, A550, A560, A580, A700, A850, A900, A33, A55; KONICA MINOLTA Maxxum 7D, Maxxum 5D Two stage release button: halfway pressing for auto focus, complete pressing takes the picture Lock the button for long exposures or continuous shooting