The Kowa TX17-K Mount Adapter for 850mm Telephoto Lens - Pentax is required for using the Kowa 500mm f/5.6 telephoto lens/scope as a 850mm telephoto lens for a Pentax digital camera.

• Turn your Kowa 500mm spotting scope into a 850mm telephoto lens

   

   

• Designed specifically for use with Pentax cameras

   

   

• Genuine Kowa digiscoping accessory

Equipment Type: Mount Adapter

Application: Kowa 500 spotting scope to Pentax cameras