Two Thirds
Two thirds is a viewfinder app for the iPhone that allows you to easily take pictures and being sure you follow the well known “one third/two thirds rule” .
That rule is simple: don’t center the subject to give it more drama.
The app overlays a green line a one third and two thirds, both horizontally and vertically, and you can move the line intersection if you want to take a precise line at a precise point.
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