the 120 planar is a unique lens. it is fantastic!!! i tried the 140 and the 80 together with the canon 500D close up lens, i can recommend it for flower or bugs or when all the important things are in the center. when it comes to flat field of focus, low distortion, even distribution of sharpness at higher magnification, this is where the 120mm apo-makro-planar comes into its own.