The 12 MP FUJI EXR Sensors are like a chessboard turned by 45 degree. The raw file consists of two half pictures one for the black fields and one for the white ones, each 6MP. In high resolution mode both are done by the same ISO and result in 12 MP picture. In dynamic range mode the white fields are exposed for 4 times the ISO and the result is a 6MP picture with more dynamic range. Magic lantern for Canon has a Dual-Iso mode which exposes each second line different and then calculates a 'full' resolution picture. So my idea is: If the sensor has a range of 9, DR mode will have 11. The dark half picture will cover 1-9 and the bright one 3-11. So the half pictures overlap in the range 3-9. With some interpolations and compression it should be possible to turn a DR-mode raw into a HR-mode one. Better resolution in the midtones than the DR-Mode, but less (artefacts?) in the bright and dark areas than the HR mode where only one half of the half-pictures has information. Before i spend too much time into it, do you think it is a valid idea? ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
