SIGMA SD1 - Manual (Page 59)

58
AF AUXILIARY LIGHT
The built-in AF auxiliary light of the SD1 enables focusing in low light
conditions.
z
The AF auxiliary light can be used with (Single AF mode) and automatic or
center focus AF point selection only.
z The AF auxiliary light is effective with the center focus of the automatic AF
selection only.
z The effective distance of the AF auxiliary light is 3m.
CAUTION!!
•
The lens hood must be removed when the AF auxiliary light is used. The AF
Auxilary Light may not work correctly if long and large diameter lenses are
attached to the camera as they may interfere with the beam.
•
If the AF auxiliary light is continuously used, it may turn off temporarily in
order to protect the lamp. The AF auxiliary light can be used again after a
short pause.
•
Do not use the AF auxiliary light for other purposes (lighting etc.) as
continous use of the AF auxiliary light will cause damage .
z
The AF auxiliary light can be turned off. Please set [ Capture Settings]
(P.28) → [AF Auxiliary Light] → [Off].
FOCUS LOCK
This photography method is useful if a photographic subject is not positioned
within the central AF frame.
1
Choose the AF point according to the "AF POINT SELECTION” instructions on
page 57.
2
Position the photographic subject into the selected AF frame, and focus by
pressing the shutter button halfway.