I'm a bit frustrated. My other camera had a setting "allow pictures without storage card?" which I had unchecked. That way I couldn't take a picture without the card being inserted in the camera. Well...I can't find anything like that on the RX1, and I've taken shots several times when nothing was really happening. I know that the little warning "no card" comes up but I don't always notice it. Is there a setting that I'm missing to stop this behavior?