Pentax Optio RS1000 Operating Manual page 70

To Switch the Face Detection Function
By default, the Face Detection function is set to Face Detection On. You
can switch to Smile Capture, which automatically releases the shutter
when your subject smiles. The Face Detection function is switched as
follows each time the I button is pressed: Smile Capture
Detection Off
3
An icon indicating Face Detection On or Smile Capture appears when
switched to either face detection function. (The icon does not appear
when the Face Detection function is not activated.)
Face Detection On
The Smile Capture function cannot be set in F (Digital Panorama)
mode.
68
Face Detection On
Smile Capture
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Face
I button
Face Detection Off
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