Luminance Studio is a painting software that focuses on painting with luminance for both natural media and design style of artwork.
Website: http://www.pixarra.com/
Giveaway: link
Download: tbluminancestudio_install_2_17.exe
All the paintings in Luminance Studio start with a black background and are painted to the light. Besides, Luminance Studio comes with 5 primary ArtSets: Paint, Design, Overpaint, Scribblers, and Masking ArtSets. Additionally, there are 5 user ArtSets that can hold up to 60 brushes each. Luminance Studio also excels at line art with a luminance style that is well suited for abstract works.