Cosina 70-210mm f/2.8-4 AF

This camera glass has a variable aperture range from f/2.8 to f/4, which means that it can capture sharp images even in low light conditions. The lens is constructed with 13 glass elements in 10 groups, which helps to reduce chromatic aberrations and distortions. The lens coating helps to reduce flare and ghosting, which can be a common problem with photographic lenses.

This lens is available for several camera brands, so there are alternatives depending on your camera brand. It has both autofocus and manual focus capabilities, which gives you more control over your photos. The bokeh, or the quality of the out-of-focus areas, is quite pleasing and can add a nice touch to your photos.

The build quality of this photographic lens is solid, and it was manufactured in Japan. It has been around for a while, so it may not have the latest technology, but it is still a reliable option. The resolution is good, and it can produce sharp images with good contrast. Overall, the Cosina 70-210mm f/2.8-4 AF lens is a good option for those looking for an affordable telephoto zoom lens with decent optics.

Optical design

Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result. With high brightness value, it has the ability to collect light even in poor lighting conditions

Physical characteristics

With a lens filter diameter of 62 mm you are one step from the next standard filter size, buy step-up ring and bigger filter you may want to use a step-up ring and 67 or 77mm filter. 128 mm long, requires consideration if you want to carry in the camera bag. Weights 710 grams so it is a heavy lens, consider using its own lens bag.