Kowa's TSN-PA8 Digiscoping Adapter installs quickly and easily on your TSN-series spotting scope without tools or having to permanently modify your scope in any way. The main piece of the adapter attaches to the DSLR lens mount using a user-supplied camera-specific T-ring* (*Required, Not Included) which then slides over the installed scope eyepiece. It is designed to place the camera sensor at the eyepiece's optimum eye relief to allow you to achieve crisp, tack-sharp focus using the scope's focus wheel. The adapter is configured with an open-frame to give you full access to the eyepiece zoom collar, so you can enjoy the full power of the eyepiece for you photos. Since the eyepiece stays on the scope while your digiscoping, simply remove the main adapter body to view the scene with your eye.