I have recently picked up a data back for my Contax G2. However, the instruction manual is in Japanese. I've managed to work out some of the features, but others remain unclear. Does anyone know whether the manual is available online? A search has unearthed the G2 manual but not the data back. Alternatively, can anyone give me a quick guide - particularly how to set the different modes (imprinting on each photo/collecting the data on the first 2 exposures, etc)? Thanks.