Neither, as an out of focus image is a user problem. Before taking the picture look in the view-finder and focus where you want it to be and then take the shot. It could be mirror-slap that causes the camera to shake when taking the image. Try holding the camera firmly when taking the shot to dampen it, or as you are shooting at high speed it might be better to hand-hold. Not sure if the D60 has the mirror lock-up option so, check your manual. If it has the lock-up mirror option then select it, then when you press the remote the mirror will lift, wait a couple of seconds and press the remote again and the picture will be taken and the mirror will come down. This avoids mirror-slap.
