GIMP Layer Mastery Hub: The Industry Foundation Practice Tes

In the context of advanced compositing techniques, what is the primary advantage of using a "luminosity mask" derived from a layer mask over a simple selection for blending two images with vastly different tonal ranges?

When performing a complex composite requiring precise control over fine details like hair strands, what is the most effective layer masking strategy to achieve a clean separation while minimizing haloing or pixelation artifacts?

In the context of "The Complete Layer Masking & Compositing Course 2026," what is the fundamental difference between using a "destructive" layer mask (e.g., painting with black on a white mask) and an "additive" layer mask (e.g., using a selection to create a white mask on a black background)?