Transmitted lighting
The photography using transmitted light is performed by placing a visible light source behind the work of art. This method when applied to canvas paintings, exposes the differences in permeability on surface areas, resulting from variations in the thickness and number of color layers, density of the painted medium, etc. The cloth support's conservation issues can also be clearly viewed this way, such as holes, tears, weaknesses, etc., along with any degradation of the painted layer, such as cracks.