My friend was talking about how he can set his camera to to take 3 or 4 different exposures in a row without him having to change the camera settings. Can I do this with my D40? I was looking over the manual and in the part where it (to me) looks like it is talking about bracketing (that is what he called what he does) it just say's that my camera has an auto-exposure feature or something like that. Is there a way for me to take 3 or 4 exposures at one time on my d40 or not? And if there is, How do I do it?