opacity of a brush

[Lamoen]

When I paint a stroke with a brush of which I put the accunulation less then 100 or I put the color to a lower opacity then after I make one stroke and then a second one that second one adds up to the first one. I want it ti have the same opacity. How can this be done?

[smadell]

Good morning, @Harry van Lamoen. I don’t think you can accomplish what you want by setting the brush to have an opacity less than 100%. That’s just the nature of opacity. Any brush stroke of less than full opacity can (and will) allow an overlapping brush stroke to “add” to it, the result being a more opaque color where the strokes overlap.

If I’m interpreting what you want as an end result correctly, you need to use your brush (i.e., paint) on a new Pixel Layer with a brush set to 100% opacity and 100% flow to get a consistent look where the strokes overlap. Then, lower the opacity of the layer itself to get the desired “translucent” effect I think you’re after.

[Lamoen]

Thanks for your answer, but then the whole layer has this effect and that should not be.
What I need is for every one or more strokes decide, with a shortkey + or -, to set the amount of opacity and that should not change or add to the opacity untill I want another opacity.

an update after dinner 🙂 I think, although my feature request stays valid, I found a solution by going to the color tab and choosing the burger menu option sliders or even Tint to get the exact vague color I want. 
 

Edited November 22, 2024 by Harry van Lamoen

[Pšenda]

Special pixel layer (my name Brush layer) with opacity:

[smadell]

@Harry van Lamoen - it's hard to guide you without more specifics. You might want to provide specific examples of what you're trying to accomplish. But... if you are only looking to be able to change the brush opacity between strokes, by using a shortcut key or something similar, that is easily accomplished. Simply use the number keys to specify the desired opacity: press "1" for 10% opacity, "4" for 40% opacity, and so on. Pressing "0" will get you 100% opacity, and pressing two numbers in quick succession will get you an opacity that is not a multiple of 10 (e.g., pressing "3" and then quickly pressing "5" will get you 35% opacity). In that way, you can quickly shift between different brush opacities on the same layer with a minimum of fuss.

The problem that I was alluding to earlier is simply that if you ever overlap brush strokes with less than full opacity brush settings, then the overlapped areas will be darker than the other portions of the stroke(s).

Here is a quick video to show you what I'm talking about. The brush starts at 100% opacity. But I am changing opacity by pressing number keys (you can see the keys being pressing in a bar along the bottom of the video) and you can follow the Opacity of the brush in the enlarged area of the Context Toolbar at the top left corner. All is well and good until the very end when the 35% opacity brush is used to create a line that overlaps many of the others. That side effect cannot be avoided without setting opacity of the brushes to 100% and then setting the Layer opacity to less than 100.

 

 

[Lamoen]

thank you very much for taking the time. This is very usefull for also another situation.
For now if I want a more vage version of the same color I discovered the Tint option in the burger menu of the Colour tab. That solved my specific question.
Thanks @smadell and @Pšenda again! The combination of Tint and Opacity for color and opacity for layer is exactly the complete solution.

[smadell]

Glad to help!