Unwanted Depth of Field Blurring

I did a tutorial here http://cgcookie.com/blender/2012/11/29/creating-a-little-elephant-character-in-blender-part-02/ I’m having trouble with the final rendering. I can’t seem to get rid of the excessive blurring on the left side of the floor in my image. I attempted to not use depth of field at all by unchecking limits in the Depth of Field tab of the camera properties panel. But I didn’t notice any change. I still got the same unwanted blurring. See the screen shot below to see what I mean. Can someone tell me how I can get adjust the blurring or get rid of the blurring of the floor on the left side?


I think that your foreground is blurred correctly and appears more exagerated there because there is no hi contrast materials. Where as the middle of the shot has the nice floor grooves which appear quite dark and read as more sharpness. Perhaps try moving the minimum focal point closer to camera and change the f stop or size of blur.

Thanks for responding. As a beginner, I had no idea how to correct the blur. Although I didn’t understand how to “move the minimal focal point or change the f stop”, I did mull over your comment about the contrast of the floor groves. I went back and adjusted the original arrayed tile so the "grooves were a little bigger around the perimeter. That solved the blurring problem I was having. Thanks for steering me in the right direction.