Use when lighting, rendering or compositing in Blender: light a character, product or hero shot, interior at dusk or night, three-point or motivated lighting, sun and sky, HDRI, EEVEE vs Cycles settings, light leaks or noise, flat or muddy renders, subject not standing out, AgX/ACES color management, render passes, EXR, light groups, bloom and vignette in the 5.x compositor, rule of thirds and value checks, toon/NPR looks, or judging a render like a lighter.