Helios 44/2 on Nikon F mount infinity focus achieved without extra glass adapter | Nikon DSLR and M42 lenses (all Nikon DSLR from 2006 onwards) | Flickr
Review: KMZ Helios-44 58mm 2.0 - phillipreeve.net
MC HELIOS-44M-4 58mm 1:2 lens information and sample photos - Nikon Rumors
M42-Nikon Adapter Ring with Glass. Quality Test. Lensbeam
Megadap's MTZ11 adapter gives (almost) any manual lens autofocus with Nikon Z mirrorless cameras: Digital Photography Review
M42-Nikon Adapter Ring with Glass. Quality Test. Lensbeam
Amazon.com : Helios 44-2 M42 Russian Lens for Nikon Cameras Not Used Like New : Electronics
Sample photos taken with the new Shoten lens adapters for Nikon Z-mount - Nikon Rumors
Review: KMZ Helios-44 58mm 2.0 - phillipreeve.net
Amazon.com : Fotasy Adjustable M42 Lens to Nikkor Z Mount Adapter, M42 Z Mount, fits M42 42mm Screw Mount Helios Lense, Compatible with Nikon Z Mount Mirrorless Camera Z30 Z50 Z5 Z6