Get Two times closer to your subject with the Cokin Magne-Fix 2x Telephoto Lens. The Cokin Magne-Fix lens features a magnetic attachment instead of a thread so it can be used with many unthreaded camera lenses. To attach the lens, a unique magnetic ring sticks around the camera lens and holds the telephoto lens onto the camera body. The magnetic ring can remain permanently on the camera, or can be easily removed if necessary.
Note: Tests have been made to ensure that the magnetic system does not create interference with cameras or phone devices.