Raw-RDI dark frames (phone face-down, minimum analogue gain) put the
pedestal at exactly 64 in 10-bit (mean 63.98, median 64, p1/p99 63/65)
= 4096 on the 16-bit scale. The softISP's dynamic estimate ran at 48;
the 16-code residual was amplified by the CCM into colour casts in
dark image regions.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Adds imx896.yaml (CCMs for 2800/4000/5750 K) so the main camera gets
real colour instead of the uncalibrated fallback. The matrices are
numeric calibration data read out of the stock Android tuning blob -
measured spectral response of this sensor, not authored expression -
and are shipped by the project owner's decision, consistent with the
vendor-derived data this image already carries. Durable replacement is
to measure our own from a colour chart.
Note the file lists Adjust/Agc/Af as well as BlackLevel/Awb/Ccm: a
sensor-specific tuning file REPLACES the fallback's algorithm list, so
omitting them silently disables auto-exposure and autofocus.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
