Whenever I take a group shot ( 4 people or more ) I have a rather difficult time getting that one perfect shot. Either 1 person will blink their eyes, someone else will look off to the side or another will move. I have been compensating by taking several shots of the same pose. Sometimes 10 or more if the group is very large.I have been fortunate so far and have been able to get that just right pose out the batch. Is this the best way to handle this or are there some tips or books that address this in a better way?