Originally posted by Eruditass I just use pseudo-quickshift and set it to infinity if it comes too close on my Tamron 70-200mm f2.8 and sometimes with the 1.7x tc. It's a little tricky with the AF/MF clutch, and I hold no responsibility for any damages :-p
Note I am referring to pushing the lens release on the body with my right ring(?) finger.
Eruditass, can you explain further what you mean? I have the Tamron 70-200/2.8 on my K20D.
I experience the same issue with soccer. I typically use AF-C center point (I can always crop later), but it often finds better contrast in the background (especially as the subjects are moving) and I miss focus. I've got a lot of great pictures of the cars behind the game.
I tried setting my focus point manually and using the lower center point, but this only works when the distance is just right.
Lately I've set up the AF button to "cancel AF" and when my player is in focus (I'm using a split focus screen), I hold the AF button to stop the focus from changing until the action moves significantly. This works well when the player is halfway across the field, or when someone steps into my way for a moment.