Filmic assumes that it receives a linear scene-referred image. darktable's standard matrices are just linear transformations of the demosaiced raw file, so this is fine. However, if you use an input profile that has some sort of gamma correction, then the data is no longer linear, and you can use the "unbreak input profile" to undo this gamma correction and restore the data to linear form. There can be other use cases for unbreak input profile as well, but those would not involve filmic.
On Wed, 21 Oct 2020 at 04:36, ternaryd <terna...@gmail.com> wrote: > Can someone please explain the relation between > unbreak input profile (logarithmic mode) and > filmic rgb? > > The online manual says, that unbreak is required > for certain input profiles, while some research > on filmic seems to imply that unbreak was sort > of an early version of filmic and they are not > supposed to be used together. > > Who exactly brakes my input profile? Which are > those "certain" profiles, and is it no longer > true, that unbreaks's sin is to introduce > logarithmic colors too early in the pixel pipe > (IIRC)? > > I'm trying to use a custom made ICC profile > (LUT, XYZ) for my camera as an input color > profile, which has served me well in the past > as a replacement for the base curve. But I'm > still struggling with filmic, tone equalizer > and color balance. > > Thanks, > > ____________________________________________________________________________ > darktable user mailing list > to unsubscribe send a mail to > darktable-user+unsubscr...@lists.darktable.org > > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
