The Kowa TSN-PA7 DSLR Digiscoping Adapter attaches your DSLR camera body directly to the body of a TSN-880 or a TSN-770 Spotting Scope via a T2 mount Using this adapter will enable your DSLR camera to harness the scope's full zoom range and have up to 2570mm of focal length with the TE-11WZ Eyepiece and up to 2750mm of focal length with the TE-10Z Eyepiece