I was out hunting for a decent street sign shot today. This isn't it, but I wanted to post this to show why the venerable and relatively old 135 f2L is so coveted as a portrait lens. This was shot at f2. Great subject but note the blur. This lens creates terrific background blur. Certainly one lens that will never leave my collection. ;-) A bit noisy...that's my fault, but it sure does make the background fade away.