The Helios-81 50 mm f/ 2 Lens. Specs. MTF Charts. User Reviews.
Helios 81N 50mm f/2.0 A Little Gem | Macroderie
SERVICED! NEAR EXC! USSR MC HELIOS-81N (HELIOS-81H) LENS f2/50, NIKON MOUNT (2) | eBay
Detailed review of MC HELIOS-81H 2/50 (aka ARSAT H 50mm 1: 2) | Radozhiva
MC Helios 81 N Soviet lens (2/50mm) copy planar | eBay
MC Helios-81N 2/50mm, great portrait lens SLR, Soviet Vintage lens, Nikon mount | eBay
Soviet Camera Store - Multicoated HELIOS-81H 50mm f/2, Nikon mount full frame lens FREE SHIPPING NATIONWIDE! Pls order here - http://sovietcamerastore.com/product/mc-helios-81n-50mm-f2-sn-9407494/ This is THE HELIOS lens for NIKON users – allows infinity
MC Helios 81n F2 50mm Nikon F Mount Russian Vintage Manual - Etsy