The legendary Helios 44 — the Soviet 58mm f/2 famous for its distinctive swirly bokeh effect.
The Helios-44M-4 58mm f/2 is a classic Soviet standard prime in M42 screw mount — the M-4 designation is a production variant of the popular Helios-44 series. M42 mount.
58mm focal length. f/2 maximum aperture. Helios-44M-4 variant. Manual focus. M42 mount.
The Helios-44M-4 is one of the Helios-44 series variants — widely used Soviet standard primes known for their swirly bokeh characteristic of the modified Biotar optical formula. f/2 maximum aperture. M42 mount adapts to most modern mirrorless cameras. Extremely popular for adapted portrait work due to the distinctive bokeh rendering.
On the used market the Helios-44M-4 58mm f/2 is a popular Soviet portrait prime. Condition checks: aperture blades (check for oil), focus helicoid. M42 mount.