Sony Mount Macro Extension Tube Set Kit for Extreme Close-up, Fits Sony A900, A850, A800, A700, A55, A33, A580, A550, A500, A450, A400, A380, A350,A330,A300, A230, A200, A100
Macro extension tube moves the lens farther from camera sensor, the farther away the lens is, the closer the focus, the greater the magnification. For Sony A900, A850, A800, A700, A55, A33, A580, A550, A500, A450, A400, A380, A350,A330,A300,  A230, A200, A100