Cosinon 55mm f/1.4

Cosinon 55mm f/1.4 is a manual focus prime 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. Wide open, subjects located outside the depth of field are shown very blurred.

Physical characteristics

Weights 325 grams so plan ahead, carry only if really necessary. With a lens filter diameter of 55 mm commonly filter size, gives you a variety of filter options. 54 mm long, this small lens should be always in the camera bag.