16-bit word and 12-bit MSB-packed uncompressed NEF, maker-note black
levels and WB_RBLevels, masked trailing column trim, robust white
estimate ignoring 0xFFFF padding. Huffman-compressed NEF is reported as
unsupported (no clean-room description available).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>