Troubleshooting: the likeness (3)

3 Check the portrait at twilight.

People always think that the lighting in a painters studio should be abundant. However in some cases, the opposite is true. A few times scarce lighting is very welcome. When I want to check an almost finished portrait I switch off  the lights in my studio to see the portrait at semidarkness. Then I notice other differences in hues and values than I’d seen in full lighting.

Studio with full illumination
Studio with full illumination.
Studio at semidarkness
Studio at semidarkness.

See also this article on studio lighting.