I have asked this question on a couple of sites including the Mamiya site without any luck. Has anyone used this lense? How is it for sharpness? How does it handle, i.e. weight and size? I see this lense come up for sale once in a while. The range intrigues me as being very useful for my type of shooting. I have not been able to find any reviews or information about it. I am considering this lense for my PRO tl. Any help would be appreciated.