DContinuous-servo Autofocus

In AF-Cmode or when continuous-servo autofocus is selected in AF-Amode, the camera gives higher priority to focus response (has a wider focus range) than in AF-Smode, and the shutter may be released before the in-focus indicator is displayed.

AGetting Good Results with Autofocus

Autofocus does not perform well under the conditions listed below. The shutter release may be disabled if the camera is unable to focus under these conditions, or the in-focus indicator (I) may be displayed and the camera may sound a beep, allowing the shutter to be released even when the subject is not in focus. In these cases, focus manually (0 60) or use focus lock (0 58) to focus on another subject at the same distance and then recompose the photograph.

There is little or no

 

contrast between the

The focus point contains

subject and the

areas of sharply

background.

contrasting brightness.

Example: Subject is the

Example: Subject is half in

same color as the

the shade.

background.

z

The focus point contains

Background objects

objects at different

appear larger than the

distances from the

subject.

camera.

Example: a building is in

 

Example: Subject is inside

the frame behind the

a cage.

subject.

The subject is dominated

The subject contains many

fine details.

by regular geometric

 

patterns.

Example: A field of flowers

Example: A row of

or other subjects that are

small or lack variation in

windows in a skyscraper.

brightness.

 

DThe AF-Assist Illuminator

If the subject is poorly lit, the AF-assist illuminator will light

AF-assist illuminator

automatically to assist the autofocus operation when the shutter-

 

release button is pressed halfway. The AF-assist illuminator will not

 

light during continuous-servo autofocus or manual focus, in

 

shooting modes in which the AF-assist illuminator can not be used,

 

or if Off has been selected for Custom Setting a2 (Built-inAF-assist

 

illuminator; 0 155). The illuminator has a range of about 0.5–3.0

 

m (1 ft. 8 in.–9 ft. 10 in.); when using the illuminator, use a lens with

 

a focal length of 18–200 mm and remove the lens hood.

 

AThe Beep Speaker

Custom Setting d1 (Beep; 0 158) can be used to turn the beep speaker on or off.

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