Sigma AF 100-300mm f/4.5-6.7 DL
Sigma AF 100-300mm f/4.5-6.7 DL is a auto focus ultra telephoto zoom lens for full frame cameras.
Has 8 aperture blades, with this amount of aperture blades you will be satisfied with the result.
99 mm long, requires consideration if you want to carry in the camera bag. Weights 410 grams so plan ahead, carry only if really necessary. 55 mm lens filter diameter, commonly filter size, you have plenty of possibilities.