The best way to ensure sharp images is to stop worrying about composing in camera and just always shoot with your subject dead center. Personally, I find the lens to have the best balance of bokeh and sharpness at about f/2.0. Wide open, this lens is fairly soft, though usable if you only need the very center of the frame to be sharp. Step outside those limitations and sharpness falls off like crazy. If you stop down the Helios 85mm and place your subject in the center of the frame, sharpness isn’t too bad. In late 2015, they finally started to find their way to being easily accessible in North America. Two of the Helios lenses have become legendary for their extremely characterful rendering of bokeh, the first being the relatively common 58mm f/2.0 and the second being the much rarer 85mm f/1.5, which ended up being used more in night vision devices than cameras, which made the few M42 mount versions of the lens quite expensive given the exotic beauty of their performance.Ī few years ago, in reaction to this demand, the Helios 40-2 85mm f/1.5 was updated for modern DSLR mounts and put back into production in Russia. Over the course of a few decades, dozens of Helios lenses variations were created, the majority designed for non-photographic uses. Many years ago, the Helios lens line was first born as a clone of sorts to port the legendary Zeiss Biotar lens formula into the M42 format that was used in the Soviet Union.
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