A telephoto lens with a focal length to 300mm on a 35mm film camera, has no precedent in the combination of an early opening of F2.0 with an exceptionally compact size, low weight, power and telecommunications. It offers the use of ED and Super ED glass, razor sharp images with an absolute minimum of chromatic aberration. But it also has superb defocusing characteristics that it is possible to do just for photographers to make their creative goals.