Pentax SF1 - Page 27

MODE
2. When you press the shutter release button halfway
down, "A" and a shutter speed will appear in the
viewfinder, while the CEIMTIC panel indicates
the shutter speed.
Aperture-Priority AE Mode Warnings
When the subject is too bright or too dark, the viewfinder
and CENTIC indicators blink to warn you. Turn the
aperture ring either to a smaller f-number (toward f/1.4,
etc.) or to a larger one (toward f/22, etc.) until the
indicators stop blinking. When the selected shutter speed
is 1/30 second or slower (shown by orange indicators in
the viewfinder), the use of a flash or tripod is recommend¬
ed to avoid camera shake. (See page 26 for more detailed
information on warnings.)