AGFA 307 - Manual (Page 34)

Chapter 1 Basic operation
5. Align the subject within the focus frame [ ] and press the
shutter release button partway down to activate autofocus and
autoexposure systems.
6. The standby lamp in the viewfinder will glow when the digital
back is ready to take the picture.
7. Press the shutter release button all the way down to take the
picture.
Fully-Automatic Mode