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Full-time Manual Focusing with USM Lenses
USM (Ultrasonic Motor) lenses are equipped with a
☛This method of focus adjustment cannot be used if your USM lens does not have a distance scale.
Custom Function F-7
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When using a USM lens equipped with an electronic manual focusing system, setting this custom function will allow manual focusing only when the lens’ Focus Mode switch is set to (M).
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Focusing
Checking the Depth of Field
Depth of field is the range of focus in front of and behind the subject in which objects appear sharp. The depth of field varies from shallow to deep depending on the aperture setting, the angle of view of the lens in use and the camera to subject distance.
Press the
The camera will close down the lens’ diaphragm to the shooting aperture, allowing you to see the range of sharpness in the viewfinder.
Exposure setting is locked when the
The autofocus operation does not function while The