Tested on real Sony A7R VI brackets (67 MP): the merged radiance agrees with every frame within ~1 % in all three
channels and the measured exposure steps match EXIF within 0.03 EV, and the black-hole stars and the merge memory are
fixed. What keeps the row 🟡 goes to gap 29: AI Denoise doesn't run on merged (linear) DNGs as Lightroom's does, JPEG
brackets have no camera response curve, and every frame is held as 32-bit float (~0.86 GB per 67 MP frame). Merge area
100 % → 88 % in target-app-parity.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
