How to use a 2.2x telephoto lens effectively for capturing distant subjects?

To use a 2.2x telephoto lens effectively for capturing distant subjects, adjust the focal length on your camera to account for the magnification of the lens. Use a tripod to stabilize the camera and reduce camera shake. Focus carefully on the subject and consider using manual focus for precision. Experiment with different apertures to control depth of field and ensure sharpness. Lastly, practice patience and take your time to compose the shot for the best results.