K-r's AF Accuracy Affected Much by Colour Temparture (of the Light Source)

See the pictures in this experiment, the pictures speak themselves!

http://www.pentaxforums.com/forums/pentax-k-r-forum/123165-my-k-r-auto-focus-test.html

But the software guess works of using the WB setting to make some "corrections" seem just doesn't work out at all, which can be verified in the above. It only creates more chaos, like this new K-r reported and complained about.