الوصف

ElectronicTTL Auto Focus AF Macro Extension Tube/Ring for Canon Description:
The Commlite AF Extension Tube Set (Plastic version) can perfectly transform your Lens into a Macro Lens for great Macro shooting. It drives the lens by film or digital sensor and does not affect aperture and image quality. Meanwhile, it is combined with 3 pieces of different tubes (length: *3mm, *1mm, *1mm) which can either be used separately or in any combinations(totally 7 different combinations) to satisfy your different magnification requirement. Furthermore, the tube is electronic one that can achieve functions of Auto-focus as well as TTL auto exposure by working with all EF and EF-S mount Canon lens.    
Compatibility:
All EF and EF-S Canon lenses
Features: