Digital Camera Adapter For Kowa 880 And 770 Series Should be used in combination with TSN-DA4 and TSN-AR adapter rings. Compatible Products Spotting Scopes TSN-773 77mm Angled Body High Performance Spotting Scope with PROMINAR XD Lens TSN-774 77mm Straight Body High Performance Spotting Scope with PROMINAR XD Lens TSN-883 88mm Angled Body High Performance Spotting Scope with PROMINAR Pure Fluorite Lens TSN-884 88mm Straight Body High Performance Spotting Scope with PROMINAR Pure Fluorite Lens