I took delivery of a new-to-me $11.50 lens off e-bay, (Sears 50mm f2.0) this morning. I went down the hill this morning to get some pics of Coltsfoot but they were still closed up from their night-time nap. 1. Shot wide open @ f2.0 2. Shot wide open with a 12mm extension tube. I used a Gorilla pod & 2way focusing rail. Edit I went back this afternoon to shoot the flowers open.