SIGMA SD1 - Manual (Page 47)

46
When this symbol blinks, the shutter speed
may be too slow and the picture may be
blurred. In this case, please use a flash
(P.51,81) or a tripod to prevent blurring.
PROGRAM SHIFT
You can change the combination of shutter speed and aperture value,
which were automatically selected by the camera. While turning the A-dial
(
) or S-dial ( ), the combination of shutter speed and aperture value
will change within the range of combinations that give the equivalent
exposure.
z It will be canceled automatically after taking the picture.