Is it just me or have others noticed that the sharpnest of the picture can vary on the same program? Example: there is a scene with 2 characters having a conversion. The camera focuses on the one actor ... the face is very sharp with lots of detail. The scene switches to the other actor ... the face does not seem as sharp, there appears to be less detail in the face. Is is due to the camera operator not focusing properly? different cameras? deliberate??? Or is my eyes?!!!