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Mcoplus Professional Auto Focus Macro Extension Tube C-AF-B 13mm 21mm 31mm adapter ring for Canon DSLR EF EF-S Lens
Plastic(Made of high-quality ABS that is more strong)
:Canon EF & EF-S Lenses
This 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: 13mm, 21mm, 31mm) 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 of Canon lens.
Support accurate TTL & Auto focus.
Built-in electric pins and drives.
Combined with 3 tubes in different length: 13mm, 21mm, 31mm; totally 7 different combinations.
Upgraded circuitry to work better with digital SLRs cameras and SLR lenses.
Superior lock pin which can tighten the tube joint.
Perfect for macro shooting.
High quality and compact.