There are multiple curves modules in Darktable: Base Curve, Tone Curve,
RGB Curve. What's the difference between them?
On 2020-07-27 23:57, Terry Pinfold wrote:
Hi Mikael,
these presets are just a starting point not the not point. When I
used LR I just let the default Adobe Standard be the picture style that
started the editing process. Once I started changing the image with all
of LRs sliders the starting point was no longer relevant as I had
modified the image. That is the reason I never started off selecting
camera profile styles in LR. I only mention LR because I know you have
previously used LR.
Some people actually prefer to open up the base curve module in DT and
click on the reset parameters icon. This makes the base curve go to a
straight line or turn off the base curve module which is equivalent.
Then they feel in total control of processing their image. While typing
this email I opened up an image and turned off the base curve module. I
then opened up the RGB curves module and tweaked the image how I felt it
needed the curves to be adjusted. Magic. The image looked so much better
than the base curve default. So while writing this email I have revised
what I will do in future. Why let a base curve preset define the
starting point. I have now tried this RGB curves method on an
underexposed dark image and an overexposed light image. I have rapidly
got a good starting point for processing these images. With the dark
image I had to open up the shadows by brightening and with the light
image I had to reduce the shadows to make them look darker and of course
balance the highlights. Seems this will be my new method.
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