Renders each ARW with the embedded correction on and off and compares it with the camera's
own JPEG: residual offsets by radius after a similarity fit, checkerboard line straightness,
and the ratio of the camera's correction to LightCraft's. Checked on synthetic boards with
known radial distortion (corrected: 0.04 px median, ratio 1.000; 80 % corrected: ratio 1.26,
expected about 1.25-1.28). Needs numpy, scipy and opencv-python-headless.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015gRtdWF1E9358FfzhzYqCS
