An optically outstanding lens, using it with my elderly EOS 5D. This lens is not just so suitable for Rumfotografieren - for macro friends it is certainly a pleasure, how sharp and how close the selected motifs can be captured. Why not suitable for Einfachsorumfotografieren? Answer: The focus at the desired screen object is by turning the "focusing ring" manually and not automatically, and calls for a precise distance from the motif, ie a moving object at close range is to be photographed sharply only in small intervals. That is, in a moving in the wind Flower of patient photographer needs the moment NAB ::: This optic is difficult to handle really good but for photo beginners.