Single-Bokeh Lens Chromatic Aberration & Field-Curvature Inspector

Deterministic Color-channel PSF centroiding → circle-of-least-confusion surface fit → spherochromatism residual vs focus → Petzval/tilt from radial tangential/sagittal ellipse separation. engine (.jpg, .png, .dng) built for Canon RF, Sony FE, Nikon Z, Sigma Art — zero-upload ephemeral Wasm RAM execution.

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