I use ACDSee Ultimate and Nikon Capture NXD.

I use Acdsee Ultimate 9 and Nikon Capture NxD

I own a Pronei 6i with lenses and have taken over 80 rolls of film over the last two decades. I too tried to find a use for the lens when the APS format went away. Nikon advised that there was no other compatible camera format that they could be used with so they and the camera have become museum pieces. I am now scanning all my APS and 35 mm negatives into digital format in keeping with technology.