SIGMA SD14 - Manual (Page 47)

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FOCUSING
Adjustment of autofocus and manual focus operation are explained below.
HOW TO USE AUTOFOCUS
It is possible to use Autofocus function only with AF Lenses. Your camera is
equipped with highly precise AF System and incorporates two different autofocus
modes.(In the case of Mirror lenses and some specialized lenses, the camera
can be use only in Manual Focus mode).
SETTING THE AUTOFOCUS MODE
1
Set the focus mode switch of the lens, to AF.
2
Decide the composition through the viewfinder
and press the shutter button halfway（if the
autofocusing is selected, the camera confirms
focusing with an electronic sound and a red
“in-focus” indicator appears in the viewfinder）.
Although your camera is equipped with highly precise AF system, in some
cases autofocus cannot set correctly.
■
Low-contrast subjects, such as blue sky or blank wall, etc. or when the color
of the subject is same as background.
■ The subject is located in a very low light environment
■ Overlapping near and far objects, such as an animal behind a fence
■ A subject, which moves with a high speed
■ Subjects, which have repeated patterns such as building windows.
In such cases, please use one of the following focusing methods.
1. Use the Focus Lock function to focus on another subject, which has a similar
focusing distance as your subject.
2. Set the lens to MF mode and focus manually.