Electronic Metal Mount TTL Auto Focus AF Macro Extension Tube Ring for Canon EF/EF-S

This Metal AF Extension Tube Set 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.

Features:
Support accurate TTL & Autofocus.
Built-in electric pins and drives.
Compatibility: for Canon EF and EF-S lenses.
Combined with 3 tubes in different length: 13mm, 21mm, 31mm; totally 7 different combinations.
Made of copper and lead (not plastic) that is more strong.
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.

Specifications:
Material: Copper, Lead, PC
Color: Black
Macro tube size: 6.2 * 8cm / 2.4 * 3.1in(D * H)
Macro tube weight: 241g / 8.5oz
Package size: 13 * 7 * 7cm / 5.1 * 2.8 * 2.8in
Package weight: 279g / 9.8oz

Package list:
1 * Metal Macro Extension Tube Set
1 * Bag
1 * User Manual

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