Questions tagged [curves]
The curves tag has no usage guidance.
8
questions
5
votes
2answers
2k views
What is a “Slanted S” in a curves layer?
I am trying to do a Photoshop tutorial, seems easy, but I can't understand one phrase: `First, I add a curves layer and create a slanted S. What does slanted S mean? Maybe I should "write" S in curves ...
13
votes
2answers
4k views
How does the Curves tool work in GIMP?
I started using GIMP recently, and came across an option called Curves under the Colors menu. What does this tool do, and how do I use it correctly?
I get some good colors if I make a graph in 'S' ...
12
votes
3answers
818 views
How are the levels and curves tools related?
I started to use levels and curves tools quite recently and now I mostly use the second one. Mostly this is due to the fact that I understand the underlied mathematics of curves better than levels. My ...
9
votes
3answers
904 views
What is the difference between levels, curves and contrast settings in post processing?
I have found and read a lot of tutorials that speak individually about curves, levels and contrast in post-processing but no luck so far about finding something that compares them.
It is my ...
3
votes
3answers
9k views
What's the best method to change colours in a photo to another specific color?
What is the best way to change the colours in a photo to a specific colour?
Specifically, how can we change the colours using Curves or Levels Layer? Here are few examples for understanding:
orange ...
9
votes
1answer
2k views
In ufraw, how to use the two curves?
I have a basic understanding of curves. That is, I know the mathematical concept behind them, and I have an idea what happens when I change them. But this knowledge came from sources which assumed ...
3
votes
2answers
202 views
How to find curve that correspond to a given transformation?
I am having a little bit of a mathematical approach here... I suppose that all the transformation we can make to an image which operate on one pixel per time (for example levels, saturation, color ...
0
votes
2answers
222 views
Is it possible to simulate any color-only filter with curves?
In this question it was asked whether it was possible to reproduce any color-only change to an image using just curves. In my answer, I said that there were color-only changes such as conversion to ...