I’d like to have lens-correction enabled for all my pictures by default when I import them in darktable.
For this, I created a preset and set “auto apply this preset when criteria is matched”. for the criteria i choose the specific vendor/lens, where I know the lens-correction exists and works fine.
This works fine, and for every picture (if it is a zoom lens) the correct focal length is set accordingly.
The problem arises, when I want to change the preset in some way. For example - for certain lenses I do not want all corrections enabled, but only distortion and TCA (so no vignetting). As soon as I change this parameter, and then update the preset, it seems that also the focal length setting is hard-locked (although I didn’t even touch it). The next-time, the preset is auto-applied, it also applies the hard-locked focal-length. Which is very likely wrong if the lens is a zoom lens! In this case, the distortion is applied in the wrong way, and pictures even look more distorted.
How is it possible to change a parameter in the lens-correct-preset, without hard-locking the focal length also?