Nikon D70-series, D200BODY, D200KIT 185, Low-Pass Filter, Remove the lens and turn the camera on

The Low-Pass Filter

The image sensor that acts as the camera’s picture element is fitted with a low- pass filter to prevent moiré. Although this filter prevents foreign objects from adhering directly to the image sensor, under certain conditions dirt or dust on the filter may appear in photographs. If you suspect that dirt or dust inside the camera is affecting your photographs, you can clean the filter as described below. Note, however, that the low-pass filter is extremely delicate and easily damaged. Nikon recommends that filter be cleaned only by Nikon-authorized service personnel.

1Remove the lens and turn the camera on.

2Display the Mirror Lock-upmenu and press the multi selector right ( 117; note that this option is not available at battery levels of or below, while shooting multiple exposures, or when using an optional MB-D200 battery pack

with AA batteries). The message shown at right will be displayed and a row of dashes will appear in the control panel and viewfinder. To return to normal operation without raising the mirror, turn the camera off.

3 Press the shutter-release button all the way down. The mirror will be raised and the shutter curtain will open, revealing the low-pass filter, and a row of dashes will blink in the control pan- el. The display in the viewfinder will turn off.

Use a Reliable Power Source

The camera shutter curtain is delicate and easily damaged. If the camera powers off while the mirror is raised, the shutter curtain will close automatically. Observe the following pre- cautions to prevent damage to the curtain:

•Use a fully-charged battery or an EH-6 AC adapter (available separately) for prolonged inspection or cleaning of the low-pass filter.

•Do not turn the camera off or remove or disconnect the power source while the mirror is raised.

•If the battery runs low while the mirror is raised, a beep will sound and the AF-assist il- luminator will blink to warn that the shutter curtain will close and the mirror will lower in about two minutes. End cleaning or inspection immediately.

Technical Notes—Caring for the Camera

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