The helios 44m -4 lens is a soviet lens that was produced at the krasnogorsk mechanical plant (kmz) factory in the soviet union.it is one of the most famous and popular lenses among photographers due to its unique optical characteristics and affordable price.
features:
focus distance:58 mm, which makes it suitable for portrait and general shooting.
diaphragm: the maximum value of the diaphragm f/2.0, provides aperture and creates the effect of blurring the background.
type of bayonet: usually has a byonetm42, an adapter for compatibility with modern digital cameras is required.
optical characteristics: the lens has unique optical characteristics that give the images a vintage look and create a special effect of the side, including swirl bokeh.