Nikon COOLPIX S800c Reference Manual page 146

The Shooting Menu (for A (Auto) Mode)
C
Shooting Modes That Support Touch Shutter
The touch shutter can be used in A (auto) mode and other shooting modes. Touch shutter
operation varies depending on the current shooting mode, as described below.
Shooting mode
G (easy auto) mode (A30) and
smart portrait mode (when Smile
timer is set to Off; A41)
A (auto) mode (A31), Sports,
Party/indoor, Beach, Snow,
Close-up, Food, Black and white
copy, Backlighting and Special
effects (A40) scene modes (A32)
Portrait and Night portrait scene
modes (A32)
Landscape, Sunset, Dusk/dawn,
Night landscape, Fireworks show,
and Easy panorama scene modes
(A32)
Smart portrait mode (when Smile
timer is set to On; A41)
Pet portrait scene mode (A32)
E30
Touch shutter operation
When a face is detected by the camera, it is framed by
a border. Tap a detected face to set the focus and
exposure on that face.
When no face is detected, focus is set for the area
tapped.
Focus and exposure are set for the area tapped.
Only a border displayed by the face detection function
can be selected. When the camera detects more than
one face, tap a face framed by a single border to set
focus and exposure for that face.
Focus and exposure are set for the same focus area used
when images are taken by pressing the shutter-release
button. See "Selecting a Scene Mode (Features)" (A34)
for more information.
Touch shutter cannot be enabled.
When Pet portrait auto release is set to On: Touch
shutter cannot be enabled.
When set to Off: Only borders displayed by the pet face
detection function can be selected. When the camera
detects more than one pet's face, tap a face framed by a
single border to move the focus area to that face.