Originally Posted by Miserere
You are correct, we do. Why bother including an AE-L and EV comp button but no AF? I don't get it

I am sure the grip designer was someone who had just recently defected from Canon and when they asked him if it had everything it needed he said yes.
Poor guy didn't know any better, at least Pentax should give us a firmware in which we can choose other buttons for AF.
I guess unlike others i am lucky here, i am not that used to the AF button yet and will just keep on using shutter half press, but i'd hate to be a die hard AF Button user who was in love with that until that grip was purchased :/
On a positive note, it really feels good to hold the K20D with that grip.