Originally posted by StDevious But the thing is that a lot more of sand in front of bird tail is in focus
Not really. The sand shows the tip of the tail to be smack dab in he middle of the focus zone.
Quote: I know I didn't focus on the tail.
Not on purpose, but the camera can,t read minds, assuming you pointed the focus point somewhere on that bird, the tial wold have been in range of the focus sensor. The focus sensors are too broad to allow the kimd of pinpoint precision that would be needed to be able to pick a particular part of the bird to focus on. Plus, focus recompose, while useful, does potentially shift the focus point a bit (Foogle the phrase "focus recompose sucks", but realize he ocerstates the case by a huge margin).