Originally Posted by kenyee 
Dum question, but where is this menu option? I thought one of the new features of the K20D was that you could turn it off and tell it to use its first guess at focusing position?
I searched DPR and this forum for this and couldn't find mention of it...
p.s., FWIW, I don't think the K20D is faster than the K10D in low light...feels the same to me...
AFAIK there is no way to disable the focus check on the K20D.
The only way to shoot faster is to put the camera on AF-C and shoot as soon as the first focus is acquired.
Unfortunately, this leads to quite a bit of misfocused shots: the double check is here for a reason.