Cosinon 55mm f/2.1 Auto

The Cosinon 55mm f/2.1 Auto is a camera glass that is not dependent on any specific camera mount. It has a manual focus system and produces a pleasing bokeh effect. The lens has six elements, which help to produce sharp and clear images. It also has a lens coating that helps to reduce unwanted reflections and flare. The manufacturing time of this photographic lens is not mentioned. It has a maximum aperture of f/2.1, which is quite wide and allows for low light photography. The build quality of this glass is good and it is also lightweight, making it easy to carry around. The resolution of this lens is not specified.

There are other alternatives available in the market, but this lens is a good option for those who prefer manual focus and want a lens with a wide aperture. The autofocus feature is not available in this lens, but this is not a major drawback for those who are comfortable with manual focus. The lens produces a pleasing bokeh effect, which is the out-of-focus area of the image. This effect is often used to create a sense of depth in the image.

In conclusion, the Cosinon 55mm f/2.1 Auto is a good option for those who want a manual focus lens with a wide aperture. It is lightweight, has a good build quality, and produces a pleasing bokeh effect. The lens coating helps to reduce unwanted reflections and flare, and the six elements help to produce sharp and clear images. However, the resolution of this lens is not specified, and there are other alternatives available in the market.

Optical design

Bright lens thanks to the high aperture value 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

Weights 156 grams so convinient to carry. With a lens filter diameter of 49 mm commonly filter size, gives you a variety of filter options. 36 mm long, this small lens should be always in the camera bag.