?Features:
This macro extension tube set is suitable for Sony NEX E-mout. 
This tube enables a lens to focus closer than its normal set minimum focusing distance.
Built-in electric pins， so it supports automatic focusing， automatic exposure， TTL， etc.
Combined with 2 tubes in different length: 10mm， 16mm.
can be used in any combination or individually to obtain the different magnification.
Superior lock pin which can tighten the tube joint.
Perfect for macro shooting.

Specifications:
Color : black
Suitable for: Sony NEX E-mout cameras
Material: Plastic
Macro tube size: 6.3 * 3.2cm / 2.5 * 1.3in (D * H)
Macro tube weight: 45g / 1.6oz
Package size: 7.2 * 7 * 7cm / 2.9 * 2.8 * 2.8in
Package weight: 74g / 2.6oz
 
Extension Tube Distance reading of master lens Image magnification ration Field coverage(cm) Exposure factor
10mm inf 0.2 6.5 * 8.7 1.44
0.5 0.31 4.2 * 5.6 1.72
16mm inf 0.32 4.1 * 5.4 1.74
0.5 0.43 3.0 * 4.0 2.04
10mm + 16mm inf 0.52 2.5 * 3.3 2.31
0.5 0.63 2.1 * 2.7 2.66

Package List:
1 * Extension Tube Set
1 * User Manual