The diameter of the filter at the Helios-81H 2/50 is 49mm, while on Arsat 1:2, 50mm is 52mm.ģ. Helios-81H has a metal focusing ring, while the Arsat 1:2 50mm has a rubberized ring and has a slightly different pattern.Ģ. I compared the two versions of the Helios-81H 2/50 (1988 year) and Arsat 1:2 50mm (1996 year) and found these differences:ġ. MC Helios-81H 2/50 vs Arsat 1:2 50mm Compare View: The aperture closes discrete, by half stops.Īperture has 6 blades in my copy, they are not blackened. The front lens does not rotate during focusing.Ĭloser to the bayonet placed aperture ring. It rotates 270 degrees, allowing you to carry out smooth focus adjustments. I did not understand that it is all-metal. The lens has a compact size and sits comfortably on the camera.Īhead is a 6mm wide metal focusing ring it has a pleasant texture to the touch, similar to the spikes. MC Helios-81H 2/50 Handling and Mechanics In earlier lens versions, the serial number applied next to, in front of the barrel ring. This review presents the lens released in the factory Arsenal in 1988, as evidenced by the first two digits of the serial number on the frame near the lens mount. Although their optical quality is a little different, the character is the same.Īfter the factory Arsenal rebranded in the early 90s, Helios-81H 2/50 began to produce under the name Arsat 1:2 50mm. And the lenses have different barrel designs, mounting bayonet, and lens coating. You can find different versions of Helios 81: Helios-81M, Helios-81 Automat it's all the same optical design. On newer models such as the Nikon D3100, Aperture works without problems. It's easy to do it yourself with a file ( read here). Therefore, to fully operate, it is necessary to cut down a little skirt to mount in a place of contact with the lever. The fact is that in the old Nikon cameras when the lens barrel skirt clamps the aperture lever. Note: When you mount MC Helios-81H 2/50 on the D80 Nikon, the aperture ring may not work, and the aperture will always be at a value of f/2. Letter "H" means that it has a Nikon F mount, so Helios-81H 2/50 can be easily used on Nikon DSLR cameras at the same time will automatically work aperture preset. Produced on "Arsenal" factory in Kyiv, Ukraine since 1983. That's an awfully long time to be using up old parts.MC Helios-81H 2/50 is a kit prime lens for 35mm cameras Kiev-19 and Kiev-20. If that's the case, why would the same factory continue to produce the 44-2 alongside the later (and optically better) 44M and 44M-4? I could believe they'd build them concurrently to use up parts stocks, but my 44-2 was made six years after my 44M. My understanding is that the 44-2, 44M and 44M-x series are evolutions of the same design (in that order). Assuming that - in all three cases - those first two digits signify the year of manufacture (which I believe is correct for these later lenses, though not necessarily so for many earlier Russian lenses), that means the 44M is the oldest of the three, followed by the 44-2 and 44M-4 which were manufactured in the same year.Īnd so, I'm a little confused. The 44-2 has an eight digit serial number starting "83", the 44M's number is seven digits starting "77", and the 44M-4's number is six digits starting "83". In my little collection of mostly-Soviet-era Russian lenses, I have three Helios 44-series models - a 44-2, 44M and 44M-4.Īll three lenses bear the "KMZ" logo, showing that they were manufactured by, or on behalf of, the KMZ plant.
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