i just started a new job this week which requires me to use a canon eos 30d and my boss knows just about as much aboutthe camera as i do ... nothing he wants me to use 5 different memory cards, one for each outfitter (i shoot rafting companies) and with all of the shooring i do i would have to change the cf cards at least fifteen times a day. this has got to be bad for the camera so what are the main disadvantages of this ? i need to know so i can convince him to change his system!:mad2: