Andoer Lens Adapter Ring Colorful Metal TTL Auto Focus AF Macro Extension Tube Ring for Canon EOS EF EF-S 60D 7D 5D II 550D

Features:
Support accurate TTL & Autofocus.
Built-in electric pins.
Compatible with all EF and EF-S for 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.

Specifications:
Color: Red
Materials: Aluminum， PC， ABS
Compatibility: For all EF and EF-S for 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

Shipping:

1.We guarantee to ship goods out within 24-72 hour after payment confirmation except holiday.
2.We ship by China post，HKpost EMS，DHL，Fedex，according to your choice when placing orders .
3.If you didn\'t receive the item after 45 days，please feel free to contact us.We will make all our effort to resolve the problem.
4.We are not responsible for delays causedby the customs，Import duties，taxes or other customscharges.
5. Due to stock status and time differences， we will choose to ship your item from our first available warehouse for fast delivery.

Warranty:

1.All items have 1 year guarantee.IF your purchase do not meet merchantable quality， fitness for purpose or match the description， We can make sure your issues are resolved .
2.For wrongly-shipped items， Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment.
3.For defective or faulty products，please take photos or videos，we would resend or refund after confirmation.