The Olympus 135 f2.8 isn't my first f2.8 lens of this length. I have the Minolta 135 f2.8 and that is quite heavy. The OM 135 f2.8 is quite a bit larger than the 135 f3.5 which I also have and dind it quite pleasing to shoot with. My only problem with this one is balancing it ont he Olympus E-PL1 which is my favourite m4/3 camera for manual focus lenses. I must admit the OM 135 f3.5 is much better on this camera.