This is Lucas medium 5, for impasto painting. It’s a lot thicker than the mediums I’ve used previously, almost the same viscosity as paint out of the tube. I’m experimenting using it to create a textured undercoat.
This (above) is a grey scale test on a piece of canvas that had an impasto coat of Lukas medium 5 the night before. I don’t think it was fully dried, but the texture is most visible on the lower half of this test.This (above) is an abandoned painting from last year. It has a fairly textured impasto surface. I painted over it today with this (below).
In the past, when I photographed paintings, I tried to avoid any kind of reflection or raking shadows that would show the surface texture. It was like I wanted the paint to be only colour, with no texture. It feels better now, to use texture as part of the painting, instead of repressing its role.