Translucency, transparency,...

Glass is an amazing matter : it's solid yet it lets light go through. We, photographers know that better than anybody else. Some of us spend hours, days, even our entire professional life looking for diffraction, distortion, chromatic aberration, to name but a few of lenses' potential flaws. But the act of seeing through an un-homogeneous matter - be it old window glass, a piece of cloth or a plastic film - creates interesting compositions. This is want I want to see! If in doubt, look at pictures below to get an idea of what I expect.