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Slide the audio-signal switch to BEEP ON to activate the signal. To use a camera equipped with an AF/MF control button . Press the AF/MF control button to switch AF to MF when both the camera and lens are set to AF. . Press the AF/MF control button to switch MF to AF when the camera is set to MF and the lens is set to AF. Direct manual focus (DMF) Even when AF is set, the setting is switched to MF automatically if you rotate the focusing ring while pressing the shutter button halfway. This provides quick fine adjustment of focusing (DMF). Select the mode for correct DMF from the following. Set the DMF-mode switch to whichever you prefer. Standard DMF (STD) Rotate the focusing ring to set correct DMF when the focus is locked in AF-A (automatic auto focus) or AF-S (single-shot auto focus). Using this mode is recommended for normal subjects. . DMF is not available in AF-C (continuous auto focus), when out of focus, or with continuous advance in AF-A after the second focus is confirmed. Full-time DMF (F TIME) In any AF mode (AF-A/S/C), rotate the focusing ring while pressing the shutter button halfway to set correct DMF. This is useful to catch a fastmoving subject. Shooting at infinity in MF The focusing ring can be rotated slightly past the infinity to provide accurate focusing under various operating temperatures. Do not rotate the focusing ring all the way to the end when focusing manually, even at infinity. Look through the viewfinder, etc., and set the focus precisely. Depth-of-field scale (See Exhibit . Operating Instructions-.) When focus is set on a subject, anything at that same distance will appear sharp, and anything within a certain range before and beyond the subject will also appear in focus; this is called depth of field. Depth of field depends on the subject distance and aperture you choose and is indicated by the lines on the depth-of-field scale corresponding to the aperture. . The depth-of-field scale and depth-of-field table are for 35mm-format cameras. The depth-of-field is shallower when you use an Interchangeable Lens Digital Camera equipped with an APS-C sized image sensor. . Using focus-hold buttons This lens has 4 focus-hold buttons. Press the focus-hold button in AF to cancel AF. The focus is fixed and you can release the shutter on the fixed focus. Release the focus-hold button while pressing the shutter button halfway to start AF again. Set the focus-hold/prefocus switch to FOCUS HOLD and press the focus-hold button. . The function of the focus-hold button can be changed on cameras with custom function capability. Refer to the camera manuals for details. . Switching focus range (AF range) The focus-range limiter enables you to reduce the auto focusing time. This is useful when the subject distance is definite. You can also set the desired focus range and select it. Slide the focus-range limiter to select the focus range. To set the signal off, slide the audio-signal switch to OFF. . Changing the plug-in fil...