Nikon AF-S DX NIKKOR 18-300mm f/3.5-5.6G ED VR Manuel D'utilisation page 23

■ A Note on Wide- and Super Wide-Angle Lenses
Autofocus may not provide the desired results with wide- and
super wide-angle lenses in the following situations:
Example 1: A far-off portrait
subject at some distance from
the background
1 The subject does not fill the area enclosed by the focus brackets.
If the focus point contains both foreground and background
objects, the camera may focus on the background and the
subject may be out of focus.
2 The subject contains many fine details.
The camera may have difficulty focusing on subjects that
contain many fine details or that are lacking in contrast.
In these cases, use manual focus, or use focus lock to focus on
another subject at the same distance and then recompose the
photograph. For more information, see "Getting Good Results
with Autofocus" in the camera manual.
Example 2: A field of flowers
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