Extension tubes moves the near limit of the lens by mounting the lens further away from the camera body. The tubes are used for close-up photography and are inserted between the camera body and the lens, perfect for macro photography (you do not lose sharpness because there are no glass elements in the extension tubes set). The Extension tubes have electronic contacts and autofocus and control of the aperture work as usual.
Perfect for macro photography
Maintains the cameras autofocus and exposure function
Does not affect image quality
Can be used individually or in combination
Kenko Extension Tube Set DG for Canon EF mount comes with a set of 3 rings, in 12mm, 20 and 36mm, that can be used together for a longer focal length.
