Rabatment
Rabatment (from French rabattre, "to fold down") — folding a rectangle's short side over itself to create a square inscribed within the rectangle, leaving a residual rectangle on the opposite side. The intersection of the square's diagonal with the residual rectangle creates a "power point" that classical painters used to anchor a subject.
For a 16:9 frame, the rabatment square sits flush with one short edge; the residual is a 16:7 strip. The power point falls at approximately 36% from the inside edge — close to but not identical to golden ratio's 38.2%.
Use the rabatment overlay for portrait subjects in wide-aspect frames — the power point lands where the subject's eye naturally goes.
The geometric construction. For a rectangle of width W and height H (where W > H, the standard landscape orientation), the rabatment square has side H, sits flush with one of the short edges, and leaves a residual rectangle of width (W − H) on the opposite side. The diagonal of the rabatment square runs from one corner of the square to the opposite corner; extending or terminating this diagonal where it crosses key compositional axes gives the rabatment's power points. For portrait orientation (H > W), the same logic applies with the square sized to W instead of H.
Where rabatment is most useful. Wide-aspect frames (16:9 widescreen video, 2.35:1 cinematic, 2:1 panoramic) where the rule of thirds produces placements that feel too close to the frame edges. Rabatment's power point lands further inside the frame than thirds, which suits subjects that want compositional weight without edge-tension. Most cinematographers shooting widescreen use rabatment placement intuitively even when they would not name the system.
Rabatment vs golden ratio. The two systems produce similar but distinct placements. Golden ratio places the focal point at 38.2% from one edge; rabatment in a 16:9 frame places it at roughly 36% from one edge. The difference is small and usually invisible in casual viewing; for considered fine-art work or large-format display, the rabatment placement reads as slightly more anchored to the canvas's geometry.
Related: armature, golden ratio, dynamic symmetry overlays.
Definition
Rabatment is a compositional technique that constructs two implied squares within a non-square rectangle by "folding" each short side onto the long side. The shared central region between the two squares — where they overlap if the rectangle is wider than tall, or the gap between them if it is narrower — becomes a privileged compositional zone. Subjects placed on or near the rabatment lines acquire visual weight that subjects placed elsewhere in the rectangle do not. Most analytical compositional theory after Bouleau treats rabatment as foundational alongside the diagonal armature.
Etymology and origin
The term derives from the French verb rabattre — "to fold back". The construction is documented in Charles Bouleau's The Painter's Secret Geometry (1963) as one of the foundational armatures used in classical European painting alongside the 14-line armature and rule-of-thirds. Earlier antecedents exist in Renaissance workshop practice — Alberti's De Pictura (1435) implies similar square-fold reasoning without naming it — but the formal codification of rabatment as a discrete technique is Bouleau's.
In practice
Painters apply rabatment to landscape and architectural compositions where a non-square format creates a "wasted middle" without it. Photographers use rabatment for letterbox formats (16:9, 2.35:1) where rule-of-thirds places the power-points too close to the edges. Editorial designers use rabatment on horizontal magazine spreads to define the typographic colour-block placement. The overlap zone consistently outperforms thirds-intersection placement when the rectangle is wider than 1.4:1.
Sources
- Bouleau, Charles. The Painter's Secret Geometry. Harcourt, 1963. The canonical treatment.
- Alberti, Leon Battista. De Pictura. 1435. Earlier reasoning that implies the technique.
- Edwards, Betty. Drawing on the Right Side of the Brain. Tarcher, 2012. Pedagogical treatment for self-taught painters.