HELIOS 44-2 F2 58mm on Micro Four Thirds! (Panasonic G7 / GH5 / GH4) - YouTube
HELIOS 44m-4 2/58 Lens Micro M 4/3 MFT Mount Olympus OM-D PEN Panasonic Lumix | eBay
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Helios 44-M & 44-2 mounted on a Panasonic Lumix GH5 with a m42 adapter from K&F concept. Vintage USSR lenses that produce an unusual bokeh effect Stock Photo - Alamy
GAS attack -- Helios 44-2 vintage lens on Micro 4/3 - YouTube