Sigma AF 100-300mm f/4 APO EX IF
Sigma AF 100-300mm f/4 APO EX IF is a auto focus ultra telephoto zoom lens for full frame cameras.
Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result. Great choice mainly for good light conditions
Weights 1440 grams so it is a heavy lens, consider using its own lens bag. 227 mm long, with this size carry only if you use it. 82 mm lens filter diameter, finding lens in this range can be expensieve consider using Cokin system if you really need one.