Originally Posted by
BellaBoo
So the student would notice the difference by not getting the right results from low quality vs the higher quality in the paints?
In shading, there is a big difference in many colors in the translucence. There is always a big difference in the amount of pigment to the amount of binder and that means you use a different amount of medium. The amount of medium determines the properties of the glaze. A very high pigment content equals a small amount of paint in your medium - say a mixture of Holbein oil painting medium and Lesolvant with a touch of oil of clove. Very translucent, very good glaze. Cheaper paints sometimes make a somewhat cloudy glaze. Always take more paint because they have less pigment.