Full-time manual focusing with usm lenses, Checking the depth of field, Full-time manual focusing with usm lenses -11 – Kodak DCS500 User Manual
Page 188: Checking the depth of field -11
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Full-time Manual Focusing with USM Lenses
USM (Ultrasonic Motor) lenses are equipped with a full-time manual focusing function
that lets you manually adjust the focus after autofocusing is completed to achieve the
desired effect. Use this function in One-shot AF mode.
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This method of focus adjustment cannot be used if your USM lens does not have a
distance scale.
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.
Exposure setting is locked when the Depth-of-field Preview button is pressed.
The autofocus operation does not function while The Depth-of-field Preview button is
pressed.
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).
Press the Depth-of-field Preview
button to check the depth of field
before capturing an image.
The camera will close down the
lens’ diaphragm to the shooting
aperture, allowing you to see the
range of sharpness in the
viewfinder.
Custom Function F-7
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