Pentax SF1 - Exposure Memory Lock

EXPOSURE MEMORY LOCK
The exposure memory lock is a mechanism that tempo¬
rarily memorizes exposure data measured before a shutter
release In the AE modes. It is very useful when
photographing subjects against strong backlight or when
there is a large, extremely bright or dark background
area.
1. Move in to capture the main subject (a person's face,
for example) in full frame in the viewfinder and then
press the exposure memory lock button [ML]'to
memorize the exposure data. The viewfinder
indicators will blink rapidly to indicate the function
is operating.
2. To extend the exposure memory, press the shutter
release button halfway down while also pressing
the ML button. As long as the shutter release button
is held at this position, the measured exposure data is
kept in memory.
Move back, recompose the image and release the
shutter. The subject is correctly exposed. Once the
shutter is released, the memory is canceled.
Precaution
• If the ML button is pressed while the camera is in the
Metered Manual mode, the shutter speed indicator in
the viewfinder locks and starts blinking.