Support accurate TTL & Autofocus. Built-in electric pins.
Compatible with all EF and EF-S Canon lenses. Combined of 3 tubes with different length of: 13mm, 21mm, 31mm.
Made of high-quality Aluminum material that is stronger.
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.
Features: Support accurate TTL & Autofocus. Built-in electric pins. Compatible with all EF and EF-S Canon lenses. Combined of 3 tubes with different length of: 13mm, 21mm, 31mm. 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: Materials:PC, ABS Compatibility: For all EF and EF-S Canon lenses Macro tube size: 6.2 * 8cm / 2.4 * 3.1in (D * H) Macro tube weight: 146g / 5.1oz Package size: 9 * 7 * 7cm / 3.5 * 2.8 * 2.8in Package weight: 185g / 6.5oz Auto Extension Tube Distance Reading of Master Lens Image Magnification Ratio Field Coverage (cm) Distance From Lens Front to Subject (cm) Exposure Factor 13mm Inf. 0.24 10 * 15 21 1.5 0.5m 0.35 6.9 * 10.3 16 1.8 21mm Inf. 0.40 6 * 9 13 2.0 0.5m 0.51 4.7 * 7.0 14 2.3 31mm Inf. 0.72 3.3 * 5.0 7.7 3.0 0.5m 0.83 2.9 * 4.4 7.0 3.4 13+21mm Inf. 0.64 3.8 * 5.6 8.5 2.7 0.5m 0.75 3.2 * 4.8 7.5 3.1 13+31mm Inf. 0.96 2.5 * 3.7 6.0 3.9 0.5m 1.07 2.3 * 3.4 5.5 4.3 21+31mm Inf. 1.12 2.2 * 3.3 5.3 4.5 0.5m 1.23 2 * 3 4.9 5.0 13+21+31mm Inf. 1.34 1.8 * 2.7 4.5 5.6 0.5m 1.47 1.6 * 2.4 4.2 6.1 Package list: 1 * Macro Extension Tube Set 1 * Bag 1 * User Manual