I've been rereading The Painter's Secret Geometry lately, and I'm impressed how many artists of yore relied on this simple technique and it's variations. Got me wondering if any of you thought about it when placing the focal point or area of emphasis or for cropping? Or is simply the rule if thirds, the rule of space, and possibly the rule of odds basically the same idea.
The simple idea is just to visualize any rectangle as containing a square based on the short side and a leftover part. If the picture is horizontal then the right side rabatment line would be where the square starting from the left edge would end, and the left side rabatment line would be where the square starting on the right edge would end.
One idea for composition is simply that the area of emphasis would be near the rabatment line (just to the left of the right rabatment or just to the right of the left rabatment. All the important stuff would fall between the two rabatments. It could be as simple as that. For images in the 3:2 aspect ratio it would correspond to the rule of thirds, but not so for other aspect ratios.
Getting more involved, the diagonals of the left square and the diagonals of the right square (corner to corner of the rabatment square) intersect to form a small diamond (really a square turned on end). The top and bottom of the diamond mark points for horizontal lines and the left and right corners of this tiny diamond mark points for vertical lines. These lines also can aid in the placement of important objects.
Digging even deeper, the points where the diagonals of the whole larger rectangle taken corner to corner intersect at certain spots with the diagonals of the rabatment squares, and these points are supposed to be sweet spots for focal point placement.
So all in all, something to think about when the old rule of thirds doesn't seem to hit the mark. I think it's pretty easy to imagine where the rabatment would fall, but in Photoshop one could add a layer and draw lines, holding shift for straight lines.
The simple idea is just to visualize any rectangle as containing a square based on the short side and a leftover part. If the picture is horizontal then the right side rabatment line would be where the square starting from the left edge would end, and the left side rabatment line would be where the square starting on the right edge would end.
One idea for composition is simply that the area of emphasis would be near the rabatment line (just to the left of the right rabatment or just to the right of the left rabatment. All the important stuff would fall between the two rabatments. It could be as simple as that. For images in the 3:2 aspect ratio it would correspond to the rule of thirds, but not so for other aspect ratios.
Getting more involved, the diagonals of the left square and the diagonals of the right square (corner to corner of the rabatment square) intersect to form a small diamond (really a square turned on end). The top and bottom of the diamond mark points for horizontal lines and the left and right corners of this tiny diamond mark points for vertical lines. These lines also can aid in the placement of important objects.
Digging even deeper, the points where the diagonals of the whole larger rectangle taken corner to corner intersect at certain spots with the diagonals of the rabatment squares, and these points are supposed to be sweet spots for focal point placement.
So all in all, something to think about when the old rule of thirds doesn't seem to hit the mark. I think it's pretty easy to imagine where the rabatment would fall, but in Photoshop one could add a layer and draw lines, holding shift for straight lines.
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