Is it better to set your camera to b/w before taking the shot or to edit the color on the computer later? What I`m asking is whether any detail is lost or gained by choosing one or the other. I know it gives me more flexibility to edit later if I shoot in color. I`m assuming that I know for certain before I take the shot that I want the picture in b/w. Any advice much appreciated! (If it makes a difference, the camera is a Nikon D40).