?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
10mm	0.5	0.31	4.2 * 5.6	1.72
16mm	inf	0.32	4.1 * 5.4	1.74
16mm	0.5	0.43	3.0 * 4.0	2.04
10mm + 16mm	inf	0.52	2.5 * 3.3	2.31
10mm + 16mm	0.5	0.63	2.1 * 2.7	2.66

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