But let's get serious, imposing the toy is in hand, it makes its weight but it is a small wonder. Once mounted on my 7D with its grip, completely deployed goal, all is impressive and the weight of the whole is fairly balanced, better than the 70 / 2.8 200mm I had tried with a friend. The range is particularly interesting, okay I would have preferred a more open like everyone else, but once you shoot some pictures I was pleasantly surprised with the results, I want to say is that the sharpness is quite surprising as I had some trepidation before watching my first photos on my computer screen and I was expecting a rather average result (I did my tests 800iso). So the sharpness is good to go, and good color rendering. The stab is very reactive, the rapid and accurate focus and adjustment of the pump very soft focus, the ring allowing the flexibility or hardness setting is effective and is coming good. Overall I am very satisfied with this versatile lens, the minimum focus down to 1.80m is very significant and provides good magnification. I who love hunting picture I had fun to shoot gulls in flight with the setting continuous development ............. ouhaaaaaaa !!!!!!!!!! !!! I was speechless when I saw the results, I am won over by this light and can only advise, agree it is a sum but it is a perspective that does not lose much of value over time if one takes care well so it's a good investment. With the 24 / 70mm-2.8, le70 / 200mm-4, 10 / 3.5-4.5 22mm-the 100mm macro2,8 the 580EXII flash and a 1.4 extender, here with me now all situations, I do not have to change bags in order to accommodate the 9 kg of material. I will say in conclusion that, unless you want to make major expansions do not hesitate to climb iso, I am currently between 800 and 1600 iso with this in mind and the results are really at the appointment.