Hi All,
very slowly I’m trying to understand the internals of RT/ART… and I could say silly questions.
If I am seeing in the ART pipeline the statement about Input color profile
from Camera to Linear RGB working space
then in ART, do we have a working profile (Prophoto, Rec2020,AdobeRGB and so on…) with a linear gamma opposed to percepetual gamma in RT?
Hi,
Yes.
No. RT also uses a linear TRC (tone response curve, i.e. linear gamma) by default. However, it also allows you to use a non-linear
TRC if you want:
This is not available in ART, you have to stick to linear.
Ciao Alberto,
thanks for the quick response … I thought when you click on the toner response curve button you can customize the gamma from the point the default was… OK then we have linear gamma of the working profile in RT too…
Excuse me but can you explain me the statement into Rawpedia
During this conversion, an internal gamma is set by RawTherapee that always is “gamma sRGB” i.e. “gamma=2.4 and slope=12.92”
I’m confused
Gabriele
That’s not something I wrote, sorry
Will there be a guide, a video walkthrough on how to use ART the best way for starting photographers? I think that would make a huge difference with the adoption of ART.
Hello zilexa, also read the Getting Started guide for RawTherapee, that applies for a great deal to Art as well.
http://rawpedia.rawtherapee.com/Getting_Started
@agriggio - Alberto, am I right in thinking that the deltaE mask and the Area mask cannot be used together in the same edit session?
not at all, why do you think that?
Maybe I’m doing something wrong. If I make a deltaE mask by picking a color, the mask shows ‘as advertised’.
Then I uncheck deltaE and check area mask. I draw the following form and say Show mask. Result is correct.
Now comes the problem: when I check/activate both masks and say Show mask, I see the following. No masks! I would say that the Add mode for the area shape would add my shape to the sky. It doesn’t work this way?
no. The different masks are always in “logical and” (i.e. intersection), except for the brush mask in add mode. The “add mode” of area shapes is only additive relative to the other area shapes. If you want a union of different masks, you can use a brush in add mode.
