Kenko Lens2scope Adapter for Nikon F Mount K-LS10-NFAB B&H Photo
Kowa TSN-CM2 T-Mount Camera Adapter Ring
SVBONY SV13 20-60X80 Fieldscope Telescope Monocular High Magnification Telephoto Lens Spotting Scope With Portable Adapter, Camera Adapter (Nikon) - Airsoft Shop Japan
Amazon.com : SVBONY Camera Adapter for Spotting Scope with T Ring Adapter for Canon Two Tube Construction Fits SV46 and Eyepiece Outer Diameter 49mm to 58mm : Electronics
Nikon Direct-Projection Adapter – Novagrade
Guest post: Digiscoping with Nikon Fieldscope EDG85 via FSA-L2 DSLR Photo Adapter on Nikon D300s - Nikon Rumors
T-Ring for Nikon Camera – Telescope Shop
Sony Adapter Ring | Monocular Adapter | Spotting Scope | Camera Adapter - New Ring Canon - Aliexpress