Kenko Scope Eyepiece Kit with 22mm eyepiece is available as a field scope by simply attaching to an SLR interchangeable lens (Nikon F mount/Canon EOS mount/T-mount). Magnification will change based on the focal length of the lens. Since the eyepiece is interchangeable, you can change the magnification with other optional eyepieces. A removable tripod adapter with a U1/4 screw is included.