Except for additional wear and tear on your camera... Plus larger memory cards and more hard disk space even for temporary storage of the extra files... both the additional "shots of the hand" and the bracketed images.

Think about it, you're talking about taking five shots or more to get a single, correctly exposed image!

Learn to use the histogram, shoot RAW and make minor exposure adjustments in Lightroom & Photoshop.

And bracketing won't work for moving subjects where you're trying to catch
the peak moment.

Sure, there are occasionally times when bracketing can be helpful... but I do it as little as possible.

Usually I bracket only when I want the end result to vary a lot from reality... for example a "high key" shot... or perhaps a silhouette. Those can be hard to judge and get correct exposure.

Yes, most Canon I'm aware of can be set to sequence as you see fit: "0, +, -" or "-, 0, +", etc. (The sequence also can be skewed higher or lower with
Exposure Compensation.)


IMO, one mistake people make a lot when bracketing is not having enough difference between the shots. A mere 1/3 stop or 1/2 stop is rather a waste. About the minimum I ever do is 2/3, and more often it's a full stop, occasionally more.