Frame size comparison
Two frames, one scale. The five mat views are shot on the same calibrated reference mat, corrected for perspective and normalised to 10 pixels per millimetre, then aligned at the nose bridge. What you see overlaid is the true size difference. The three worn views are photographs on the same face, same camera position every time, for the question the mat cannot answer: how big does it actually read on a head. Method on the methodology page, scores on the board.
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The residual scale error from frame height above the mat is under 3 percent and identical for every frame, so relative comparisons are exact in practice. Reference images are landing frame by frame as the shoot progresses; a labeled block means that frame's view is not photographed yet.