The Kenko Auto DG Extension Tubes are a set of three individually sized tubes compatible with Canon EF lenses. Use individually or stack multiple tubes together to enable existing Canon lenses to focus closer than the normal minimum distance. The extension tubes create a set distance between the original lens and the sensor, ideal for creating macro images. The tube design is free of any additional elements, which allows the original optical quality of the Canon lens to be maintained.

The set contains one 12mm, 20mm and 36mm length tubes, and are compatible with Canon EF* lenses. Combine each one as needed based on the level of magnification required.

*Tubes are not compatible with Canon EF-S lenses

Specifications:

Mount: Canon EF
*EF-S lenses are not compatible

Diaphragm coupling: Perfect coupling
TTL.EE metering:  Perfect coupling
Diameter of tubes (approx.): 2.4 inches  (62mm)

Length of tubes: 12mm, 20mm and 36mm

Weight:
12mm: 2.5 oz. (72g)
20mm: 2.9 oz. (84g) 
36mm: 3.9 oz. (112g)

Warranty: One Year /  Manufacturer