Lens MC HELIOS 44K-4 F2 58mm for Bayonet K Pentax Slr DSLR camera King outlets of Bokeh

Soviet lens King of Bokeh MC HELIOS 44K-4 Vintage

Format: 35mm mirror
Type: Constant focal length (fixed)
Focus: Manual Focus
System: Pentax K
Optical design: 6 elements in 4 groups

MC Helios-44-K-4 58 mm f / 2 - high-apertured, normal lens with constant focal length and multi-illumination for Pentax K cameras

TU resolution (center / edge): 42/21 lines / mm
Light transmission coefficient: 0.85
Geometrical vignetting: 58%

CONDITION:
Optical and mechanical systems works properly and smooth. The glasses are clean without a fungus and without chips and outlets scratches. Aperture and focus are working properly. All pictures are actual.