Brush Panel Luminosity Creates Halo

[angier]

Luminosity is causing a slight halo glow effect outside the boundaries of the alpha in the brushes panel which is causing some brush creation problems for me. Is there any other way to make a sub-brush color white without using luminosity when your base color is black?

To see what I am talking about...

1. Fill the background with black.
2. Set the brush color to black.
3. Create a round brush. Turn the Luminosity control to 100% so the brush color is white.
4. Add a round sub-brush. Do not change the color.
5. Test the brush at the set hardness of 80% and 100%.

Thank y'all for paying attention to all my posts about brushes.

[Sean P]

Hi Angier,


Are you referring to this? Do you mind attaching some screenshots describing what you're seeing please, and if possible a recording of the brush creation (or at the very least a copy of the brush).

[angier]

Hi Sean.

Thanks for asking me for more information. I have attached 1 - 2 Stack Black over White Brush.
So...
- Set your background color to black.
- Set your brush color to black.
- Stamp the Brush then make 3 test strokes with the sub-brush position set "at current nozzle", "behind current nozzle" and "at the end of stroke".

Should we be able to see a white halo when the 2 alphas are the same size? I've really been pushing the limits of brush creation in Affinity. The halo effect seems to be kind-of "blowing out" the layer I have under a sub-brush that has been set at 100% luminosity.

 

1 - 2 Stack Brush Black over White.afbrushes