We make M42 to Nikon F-mount lens adapters. These are not ordinary adapters, these make your cult classic lenses like the Flektogon or Pancolar, and Helios 44-2's work natively on any Nikon F camera. They are more like reverse engineered replacement back mounting pates. You can experience the original M42 lens experience on your Nikon without any compromise, they focus to infinity without the need for extra corrective glass, and they are non-destructive, fully reversible.
