It's Raining, It's Pouring

It's been raining here most of the day, so I put on my raincoat and took my camera for a very short walk.  I'm still learning the continuous focusing system.  If you are photographing something large, it works great, but if you want to focus on the tiny crab apple and not get the tree behind it, it doesn't work as well.  Unless I'm doing something wrong.  Which is entirely possible,