Olympus IS-20 Instructions Manual page 42

Recompose the shot,
then press the shutter
release button to take
the picture.
Notes:
When the flash is flipped up, or the Night Scene or
Long Time mode is engaged, the camera does
not perform spot metering.
After the shot, the Spot Metering mode is
canceled. To cancel the mode without taking
a shot, press the SPOT/LT. button again.
42
Use the Spot Metering mode in the
following situation:
When there is a big difference
between subject and background
brightness (e.g., backlighting).