Noboru Sonehara at the Japanese Kakaku.com Magazine has been putting Nikon's NIKKOR Z 100-400mm f/4.5-5.6 VR S lens through its paces while pairing it with Nikon's 1.4x and 2x Z-mount teleconverters.
Patent illustrations for a Viltrox 2.0x teleconverter have surfaced on Nikon Rumors, with ‘Z-Mount’ clearly visible on a couple of images. Should this come to fruition, it would be the first ...