An incomparable telephoto zoom, with constant F2.8 aperture, 70-200mm zoom and extraordinary G Master resolution and bokeh. G Master design and technology offers unsurpassed rendering, blazing AF, and extraordinary image stabilization performance. An XA (extreme aspherical) element with 0.01 micron surface precision contributes to previously unachievable resolution and stunning bokeh for new expressive potential. Four ED and two Super ED glass elements suppress chromatic aberration for maximum resolution and natural colour without bleeding throughout every image at all focal lengths. Minimum focusing distance is 0.96m, for up to 0.25x magnification. A floating focus mechanism minimizes distortion and aberration that normally limit close-up performance.