One Push Bracketing
Different cameras take different approaches to bracketing images and many require you to press the shutter release button prior to every frame within that particular sequence. Arguably, a more convenient option is to have the entire sequence of bracketed images captured with a single press, and enabling the One Push Bracketing control does just that.
this is perhaps not too great an issue with sedate subjects but those of you capturing scenes in which a subject is moving should find this to be useful since you stand a better chance of each exposure being similar to the others. this option tends to be located in the middle of the Custom menu.