Very few do, as the auto focus can be affected by so many obstacles which can confuse the sensor by it trying to focus on something different from what the lens is pointing at, the only real test to check if the auto focus is OK is in an area with no obstacles dotted along each side. If of course you are referring to everything in the distance being blurred then that could indicate a faulty lens assembly motor, this requiring precision equipment for checking. By the way the condensation problem would not have any bearing on this particular complaint.

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