Used mostly in conjunction with the 1.4xII this has been my main wildlife and birding lens for many years. Very sharp even with the 1.4X. The close focus capability makes it a good choice for the smaller wildlife subjects.
Has good manual focus control whilst maintain fast AF. For best AF with subjects outside the close focus zone use the focus limiter.
Mode 1 and 2 IS for panning but does not auto detect a tripod.