The A7 III's raw-IFD 0x7037 tables were refused until their geometry was checked. Measured against
the camera's own JPEG of the same exposure (Lens Comp. Distortion: Auto) on 27 RAW+JPEG pairs from
one body with the FE 16-35 F4 ZA, FE 28-70 and FE 50 F1.8 (strong barrel to strong pincushion,
compressed and uncompressed, TV and monitor checkerboards): corrected board corners sit 0.06-0.44 px
(median, 6000 px frame) from the JPEG's, against 0.8-26 px uncorrected; LightCraft applies the
camera's amount of correction within 2 %; corrected rows and columns are as straight as the JPEG's.
Sony's crop and the default crop agree on this body, so the warp is centred on the image.
A unit test pins the warp from three of these tables to the camera's fitted geometry; the model
boundary tests now accept ILCE-7M3 and still refuse its neighbours. RENDER_CACHE_VERSION is bumped.
The measurement script handles screen moiré (X-corner check, duplicate corners, consensus lattice
vectors). The corpus test's two ILCE-7M3 samples now expect one warp; raw.pixls.us is not reachable
from this environment, so that test was skipped here.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015gRtdWF1E9358FfzhzYqCS
90fa467d7e