Cosina 60-300mm f/4 – 5.6

The Cosina 60-300mm f/4 – 5.6 is a camera glass that can zoom from 60mm to 300mm, which is a great range for taking distant photos. It can be used with different camera mounts. The focus can be adjusted automatically or manually. The lens has multiple glass elements and coatings to improve image quality. The manufacturing time is not mentioned. The aperture can be adjusted from f/4 to f/5.6, which affects the amount of light entering the lens. The build quality is strong and durable. The lens can produce good resolution images. The bokeh, which is the quality of the out-of-focus areas in the photo, is decent. Overall, this photographic lens can be a good option for those who need a telephoto zoom lens for their full frame camera. There are other alternatives available in the market with similar specifications.

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. Great choice mainly for good light conditions

Physical characteristics

111 mm long, requires consideration if you want to carry in the camera bag. Weights 620 grams so it is a heavy lens, consider using its own lens bag. 67 mm lens filter diameter, you are one step from the next standard filter size, buy step-up ring and bigger filter.