The power switch on mine has vcr, off ,camera , memmory.

Next to that switch there is a button that starts and stops the record. There is also a button on top next to the zoom that says photo.

If the switch is set to tape and you hit the photo button it will take a still shot to tape with sound. If it is set to tape and you hit the record button it will record video to tape.

If you set it to memmory it will do the same to memmory except the photos are only a single frame without sound.

Mine is a DCR-TRV730.

Hope this helps