The Kenko 3-Piece DG Automatic Extension Tube Set is designed specifically for use with Canon digital SLR cameras and lenses ranging from macro to semi-telephoto. They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens. This set contains three tubes of different length — 12mm, 20mm, and 36 mm — which can be used individually or in any combination to obtain the desired magnification. They maintain auto focus and TTL auto exposure.
Enables a lens to focus closer than its normal set minimum focusing distance
The DG extension tubes have no optics
Contains three tubes of different length 12mm, 20mm, and 36mm
Designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure
Designed specifically for use with Canon digital SLR cameras and lenses