For the avoidance of blurring, there are still a help. In the D200 can be checked during the reproduction of an image in a simple manner the sharpness. This can be done with the center button on the multi-selector after the following settings have been carried out:
Menu / Custom Functions / f Control / f1 Center button / When playing back / neck / Medium Power
Another note: The cover must be removed at the Nikon for the connector and is screwed!
Open by turning against the IP.