Sigma dp3 Quattro User Manual page 17

Focus (P.49)
Compose your image with the color LCD
monitor and press the shutter button
"half-way" to activate exposure metering
and autofocus.
Take a picture
Fully press the shutter button to take the
picture.
Review the image. (P.41)
The image is displayed for 2 seconds on
the LCD monitor.
17