Helios 44 2 Bokeh !!INSTALL!!
The Helios-44 and Helios-40 are derivatives of the Carl Zeiss Biotar optical formula. As all lenses based on the Biotar formula, the Helios-44 and Helios-40 produce an unusual "swirly" bokeh effect to the out-of-focus background. The bokeh "circles" become more elliptical in shape as you move away from the center of the photo. This optical phenomenon gives images rendered by these vintage lenses a distinct character, which has created a cult following among fine art photographers.The first Helios-44 was equipped with a Start reflex camera, starting in 1958. The lens had a unique bayonet mount optics, "jumping" diaphragm and 13 aperture blades. The aperture control ring was placed on the back of the lens and switched in steps. The workmanship was of a very high standard. The second Helios-44 served as a standard lens for Zenit-3 SLR cameras in 1960-62. It already had a threaded mount for M39 optics and a classic layout of controls. It is often called White Helios.The third Helios-44 completely repeats the previous one, but the number of aperture blades was changed - they were reduced to 9. These lenses were equipped with Zenit-3M cameras in 1962-70. In the same 1962, the Helios-44 lens for the Start camera also reduced the number of petals to nine.In the late 60s, Helios-44 (m39) continued to be produced in Belarus at the BelOMO production association. At the same time, the chemical composition of the optics coating changed from violet to golden yellow. Interestingly, the lens was black and there are chrome stripes on the focus ring - by analogy with the German Carl Zeiss Jena. Therefore, these lenses are often called Helios-44 "Zebra". They completed Zenith-3M of the last years of production.The next step in the modernization was the transition fr