Hi. Is it possible to make the curves not fixed, so that can add curves in any number and choose a separate mode for each.
This is a problem with most converters, since curves are the basis of processing, and this is exactly the problem. In ART, the curve modes themselves are just right, but the problem is that they are fixed. If I need a sequence of three different curves for an example, how do I apply them? Then you need to save it as a tiff, open it again in the converter and process it, and so on, more than once.
Hello. Perhaps I don’t understand your question well enough, but why would you apply three or more tone curves to the very same photo?
You can already apply two tone curves in ART.
I don’t understand what you mean with “make the curces not fixed”.
And welcome on this forum!
These converters are not made for specific cameras, they are universal, so in my opinion it makes sense to make the setting more flexible. Rawtherapee has two curves, but you can choose a separate mode for each, and here there are also two curves, but one mode for two curves. Why limit the number of curves and the choice of modes, it would be better to give me the opportunity to add curves as many as I need. For normal processing, you need more than two curves, at least two curves with different modes, not just one. I understand that I can get a normal picture here, but these limitations complicate things. Darktable has the ability to duplicate curves, which is a big plus, it would be nice if this could be implemented in ART/Rawtherapee, namely the ability to add curves in any number, with separate modes for each.
Hi @Alexander_O, there’s a tone curve CTL script that you can use in the colour/tone correction tool. You can add as many instances as you want, and you have also masking there. It doesn’t provide modes, but they can also be added in principle. See here for more info about ctl scripts.
HTH
No, in ART you can use several modes for the two tone curves.
Thanks, but it doesn’t work for me, it gives error. Maybe I’m doing something wrong, I don’t know much about it.
I mean that the selection of modes is common to both curves, so you can’t select one film-like curve and one luminance curve.
Hi,
if you want to post more details, I can try to help. Otherwise, sorry…
Hi,
Is following setting is available in latest version?
Yes, that should still work
I open the script in the color/tone correction tool, and an error pops up.
Just create a file, add this text and save it as an .arp? I saved the file, put it in the presets folder, but the program does not start, that is, the file does not work.
Hi,
Well, I must say that a one liner “an error pops up” is not exactly what I had in mind when asking for more details… some more info that could be useful include: what ART version, what OS, whether you are using a prebuilt binary or compiling ART yourself, what exactly you did when you say “open the script in the color/tone correction tool”, etc…
Anyway, maybe you simply forgot to copy also _artlib.ctl, as specified in the README of the CTL scripts repository?
HTH
If your OS is Windows, put your tone-curve-legacy.arp in C:\Users[your user name]\AppData\Local\ART\profiles
and if your OS is Linux or Mac OS, put it in ~/.config/ART/profiles .
After that you should restart ART, and from ‘processing profiles’, select tone-curve-legacy.arp .
Then you can select a different setting for each tone curve.
Can you elaborate for me why someone would want to do this… I assume that they are processed in sequence?? I could be wrong out of the gate and then are the models not basically for color preservation/modelling?? Wrong again maybe??
There could be a very good use case but I just see one as potentially cancelling out the other when used this way…
I’m just curious…
I don’t use this function, however the first one who demanded keep this function said that “I do understand what it means, but this is for me a big regression from the previous way “tone curves” was handled. I liked the old version because I was able to be subtle, using the 2 curves with 2 different methods for effects.”