Sony DCR-TRV39 - Manual (Page 196)

6-4 Crop/Rotate/Flip Mode
Crop button
Click to crop the picture. Specify the crop area by dragging the
Control points displayed in the image edit window.
Rotate/Flip button Click to rotate or flip the image.
Cropping
Crop button
Click to crop image to the area defined by the rectangular box that appears
on top of the picture in the image edit window. Drag the control points to
enlarge or reduce the crop area.
Rotating/Flipping