Originally posted by elliott If you got the infinity adapter with the tool, it is not an official Pentax adapter, it is the cheap knock-off. This should have absolutely no effect on the sharpness of the pictures though. When dealing with an identical shot, in focus with the infinity adapter and in focus with the non-infinity adapter should be the same, since the lens would be exactly the same distance from the sensor no matter which adapter is being used.
Thanks for the reply. Ok, so pretty much i overpaid a cheap knowoff that isn´t even cut right to get the focal plane where it is supposed to be?