Shutter Lag is the time difference of time between the pressing of the shutter release button of the camera and actual movement of the shutter mechanism. Unfortunately, with various kinds of Digital Camera, this shutter lag is not really very well defined in lower end digital camera as the mechanism is nearly fully controlled by software based image processing unit. Shutter lag is an intrinsic characteristic of a camera, depending on the technique used for various components, it is partly mechanical and partly electronic.
