The absolute best lens I had. I had 70-200/4 before this that was completely unimaginable quality. This lens is even better. Stable building, belonging to the tripod, crystal clear right to the edges from the aperture 1:2,8. Almost total absence of chromatic aberrations and vignetting. A whole clockwork lenses simply. Since I use my indoor sports photos I do not need IS iom that I shoot with 1/250 shutter. Do not hesitate, buy now!