Compared to the Canon-visors, like butter go up and down, this Streulichblende sits a little tight - so the donning and doffing has already boldly go from equip. Okay, but the originals cost too tight coal. Therefore 4 stars.
No shadows or edges at 10mm - as it should be. Inside just not glued felt but the plastic is roughened / grainy, not 100% matt but okay.