Pentax 645z numbers

Mean Gain = 0.0032167 * ISO ADU/e-
measured from ISO 400, 800, and 1600.

Read noise:
ISO 200: 2.56 e-
ISO 280: 2.56 e-
ISO 400: 2.43 e-
ISO 560: 2.40 e-
ISO 800: 2.41 e-
ISO1100: 2.21 e-
ISO1600: 2.12 e-
ISO2200: 2.19 e-
ISO3200: 1.82 e-