Sony DCR-TRV39 - Manual (Page 198)

6-5 Image Resizing Mode
Current image size
Displays the height and width (in pixels) of the picture currently
displayed in the image edit window.
Width Enter a value (in pixels) for the new width of the image.
Height Enter a value (in pixels) for the new height of the image.
Lock aspect ratio
Select this option to maintain the original proportions of the
image. When this option is selected, changing the value of the
width will automatically change the height and vice versa.
[OK] button Applies the new image size.
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