The Helios 44-2 58 mm f/ 2 (Russian: "Гелиос") is a
fast standard lens with a single coating. This lens was developed basing
on Biotar 2/58 (Carl Zeiss Jena) lens.
This was one of the most spreaded lens that were released for a
"ZENIT-E" camera. Helios 44-2 58/2 has a thread mount M42x1. Aperture
control is manual with a pre-adjustment ring. In spite of it's
popularity and low cost Helios 44-2 58/2 provides very vivid,
contrasting and enough sharp images.Resolution by the lens technical passport: 38/20 lp/mm