No wonder in one bourgeois video review the chrome strip on the lens was made red and said: That's better! Indeed, that's better! Works tirelessly lenses on the carcass of the Canon 650D Test photos here: https://fotki. . Ru/users/valtsure/album/164780/ P. S. About 7 aperture blades - in one of the reviews it was said that there are more of them compared to the previous version, this is not so, all generations 55-250 initially had 7 blades (so believe the reviews after this)))