Superb optical quality; Excellent build quality; Very rapid AF with good over-ride facility; Helpful vibration reduction

Price

Superb optical quality; Excellent build quality; Very rapid AF with good over-ride facility; Helpful vibration reduction

Weight; Price

This lens is heavy and expensive! Having said that, it is superbly engineered, both mechanically and optically and puts most primes in its focal range in the shade. The autofocus is so quick (on the right camera) that it will not only track, but catch...