Yes, lots of practice.
I was very frustrated in the beginning, because of the time lag the digital has. I was used to my SLR....what I saw when I hit the button was what I got. Not so with the digital. In the beginning, all my aikido shots with the dig cam were of uke getting up off the freakin mat! <grin>
Then I learned about holding the button down just a little, then pushing it down all the way when I saw my shot.
Play with it. I haven't played with mine too much, because I really like my regular old SLR (a digital SLR is in my dreams, LOL) for aikido shots.
And according to my sensei you should "read the manual." Silly. Heh.