Nikon 25215 manual 218, With the lens ten centimeters four inches, Image Dust Off Reference Data

Menu Guide—The Setup Menu

4 With the lens ten centimeters (four inches)

from a bright, featureless white object, frame the object so that nothing else is visible in

the viewfinder and press the shutter-release button halfway. In autofocus mode, focus

will automatically be set to infinity; in manual

focus mode, set focus to infinity manually before pressing the shutter- release button. If using the aperture ring to set aperture, choose the minimum setting (largest f/-number).

5 Press the shutter-release button the rest of the way down to acquire Image Dust Off refer- ence data (note that noise reduction turns on automatically when the subject is poorly lit, increasing the amount of time needed to record the data). The monitor turns off when the shutter-release button is pressed.

If the reference object is too bright or too dark, the camera may be unable to acquire Image Dust Off reference data and the mes- sage shown at right will be displayed. Choose another reference object and repeat the pro- cess from Step 3.

Image Dust Off Reference Data

Image Dust Off reference data are recorded to the memory card at an image quality of JPEG Fine and an image size of Large. When the resulting image is played back on the camera, a grid pattern is displayed and voice memos can not be recorded. Files created with Dust Off ref photo can not be viewed using computer imaging software.

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