Nikon 1546 User Manual (en)

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Continuous-servo Autofocus
In AF-C mode or when continuous-servo autofocus is selected in AF-A mode, the camera gives 
priority to shutter response and the shutter may be released before the in-focus indicator is 
displayed.
A
Getting 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 
subject and the 
background
.
Example
: Subject is the 
same color as the 
background. 
The focus point contains 
areas of sharply 
contrasting brightness
.
Example
: Subject is half in 
the shade. 
The focus point contains 
objects at different 
distances from the 
camera
.
Example
: Subject is inside 
a cage. 
Background objects 
appear larger than the 
subject.
Example
: a building is in 
the frame behind the 
subject.
The subject is dominated 
by regular geometric 
patterns
.
Example
: A row of 
windows in a skyscraper.
The subject contains many 
fine details
.
Example
: A field of flowers 
or other subjects that are 
small or lack variation in 
brightness. 
D
The AF-Assist Illuminator 
If the subject is poorly lit, the AF-assist illuminator will light 
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-in AF-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.
A
The Beep Speaker
Custom Setting d1 (Beep; 0 158) can be used to turn the beep speaker on or off.
AF-assist illuminator