Panasonic DMCFH3 - DIGITAL STILL CAMERA Operating Instructions Manual page 46

Advanced (Recording pictures)
∫ Recording guideline
When you align the subject on the horizontal and vertical guidelines
or the cross point of these lines, you can take pictures with
well-designed composition by viewing the size, the slope and the
balance of the subject.
This is used when dividing the entire screen into 3k3 for taking
pictures with a well-balanced composition.
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