Ultratelephoto photography is easily achieved with your Televid spotting scope combined with your Leica R-mount SLR by purchasing this T-mount adapter along with either the #42300 or #42301 SLR photo adapter. You"ll need to take precautions to minimize vibrations, such as locking up the mirror if possible as well as using a cable release or remote control to fire the shutter. First, remove the eyepiece from your Televid spotting scope. Next, attach the SLR camera adapter where the eyepiece would normally be attached to the spotting scope, and screw in this t-mount adapter to the opposite end of your R-mount SLR. Now you can attach your Leica to the t-mount and you"re ready to begin taking pictures! The adapter allows photography in aperture-priority autoexposure or fully manual modes with your Leica SLR.