![]() ![]() In this form, the lens was assembled until the early 90s. The serial number was transferred to the lens body. The lens received a slightly modified lens block, the rear set of lenses was no longer twisted by the block and the lenses simply poured. In 1972, the director of KMZ issued an order to increase the production of Helios-44-2 lenses in Valdai. In design and appearance, the lens repeated the previous KMZ sample, but there was a decrease in build quality. In 1969, Helios-44-2 was mastered in Valdai. Externally, the serial number began to be applied to the ring with the name. Production began in 1967 - this year Zenit-E switched to a threaded mount on the m42. The lens received a new name Helios-44-2, and the body became completely black. The next step in the modernization was the transition from the M39 to M42 threaded mount due to the transition of SLR cameras to the M42 × 1 threaded connection with a working length of 45.5 mm, which corresponded to the threaded connection common in the world. They completed Zenith-3M of the last years of production. ![]() Therefore, these lenses are often called Helios-44 "Zebra". Interestingly, the lens was black and there are chrome stripes on the focus ring - by analogy with the German Carl Zeiss Jena. At the same time, the chemical composition of the optics coating changed from violet to golden yellow. ![]() In the late 60s, Helios-44 (m39) continued to be produced in Belarus at the BelOMO production association. In the same 1962, the Helios-44 lens for the Start camera also reduced the number of petals to nine. These lenses were equipped with Zenit-3M cameras in 1962-70. The third Helios-44 completely repeats the previous one, but the number of aperture blades was changed - they were reduced to 9. It already had a threaded mount for M39 optics and a classic layout of controls. The second Helios-44 served as a standard lens for Zenit-3 SLR cameras in 1960-62. The workmanship was of a very high standard. The aperture control ring was placed on the back of the lens and switched in steps. The lens had a unique bayonet mount optics, "jumping" diaphragm and 13 aperture blades. The first Helios-44 was equipped with a Start reflex camera, starting in 1958. This optical phenomenon gives images rendered by these vintage lenses a distinct character, which has created a cult following among fine art photographers. The bokeh "circles" become more elliptical in shape as you move away from the center of the photo. 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 Helios-44 and Helios-40 are derivatives of the Carl Zeiss Biotar optical formula. Some later Helios models were built also for the Pentax K mount. They were usually supplied with Zenit cameras and thus usable with other M42 lens mount cameras such as the Pentax Spotmatic. Helios ( Russian: Ге́лиос) was a brand of camera lenses, made in the USSR. Helios 81M 53mm f/2 lens mounted on Kiev 19 ![]()
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