Page 90 - (DK) Advanced Photography Guide

88 APPLYING | MANUAL FOCUS

FOCUSING IN ADVANCE

Modern autofocus (AF) systems can be amazingly chance. The answer is to prefocus. You anticipate a
fast and precise, but they are not perfect. AF can fail point that you think your subject will cross in front
for a variety of reasons, such as a lack of contrast in of, then manually focus the lens on that point in
the subject or low light levels. With a static subject, readiness. The technique works best with subjects
this is easy to fix—you just try again. But when your that follow a set course or move in a predictable
subject is moving fast, you may not get a second way, such as your dog bringing a ball back to you.

USE MANUAL FOCUS SELECT APERTURE PRIORITY SET CONTINUOUS DRIVE
Switching the lens to Manual focus Set a low-to-mid-range aperture Turn the mode dial to CL. Firing
(M) ensures that the focusing distance to increase the chances that your subject several frames in quick succession using
does not change once it has been set. will be sharp. This will make it possible to the Continuous Drive function will take
Remember to switch back to AF once use a relatively fast shutter speed if you a selection of photos from which you
you have finished shooting. are using a mid-to-high ISO. can select the most successful later.

PREFOCUS WAIT AND SHOOT
Focus on an area in front of you that you Watch your subject as it moves toward you.
predict your subject will pass through. Use elements Just before it reaches the area on which you have
in the scene, such as a path or a fence, to help you prefocused, press the shutter button and keep
predict where your subject is likely to go. shooting until the subject has crossed the area.

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