Very Good value. Very good quality photos. 500mm works of hands thanks to a high performance OS stabilization what bruillante enough. Some caveats, lack brightness the growing strength iso overcast, so it is for use with a sensor that manages quietly iso up to 1600 especially for pictures of birds. Otherwise in good weather, in iso 500mm 200/400 iso, magic operates like much more expensive objectives. Another point, it is heavy, for long walks naturalists it is a handicap. To get better, so brighter and lighter, it is necessary to break its tireline targets at least 3 times as expensive as those of the L series of Canon.
