The Kenko Extension Tube Set allows photographers to get up close to subjects like flowers and insects, capturing stunning close-ups without the need for macro lenses. Since the magnification changes according to the focal length of the lens, you have full control over the image results at all times. This set consists of two extension rings measuring 10 mm and 16 mm, which can be used individually or in combination. The extension rings can be easily mounted between the lens and the camera body with just a few simple steps.