Promaster Spectrum7 60-300mm f/4-5.6 UMCS

Promaster Spectrum7 60-300mm f/4-5.6 UMCS is a auto focus ultra telephoto zoom lens for full frame cameras.

Optical design

Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle.

Physical characteristics

With a lens filter diameter of 67 mm commonly filter size, gives you a variety of filter options. Weights 637 grams so it is a heavy lens, consider using its own lens bag. 117 mm long, requires consideration if you want to carry in the camera bag.