Canon OSC-128M Data Security Card for the Canon EOS Digital SLR Cameras

This data security card by Canon has become the nucleus of the OSK-E3 system. As for size, it is the same as SD memory card. With OSC-128M, encoding and decoding of the graphics data is possible. This card is compatible with EOS-1Ds Mark II, 1Ds, 1D Mark III, 1D Mark II N, 1D Mark II, 5D, 30D, 20D cameras.