ModelEXTENDER EF 2X III
Compatible BrandFor Canon,For canon EF camera
BrandYONGNUO
MountCanon EF lens mount
TypeHigh Quality
Country/Region of ManufactureChina
MPNDoes not apply
Focus TypeAuto Focus
Manufacturer Warranty1 year

Original Yongnuo YN-2.0X III PRO 2x Teleconverter Extender Auto Focus Mount Lens Camera Lens for Canon EOS EF Lens Free lens bag
 

Features:
The YN-2.0X III is the updated version of YN2.0XII.
Allows focal length of the EF increase to two times.
Ultrahigh refractive index glass coating have raised the level of the teleconverter.
The redesign of the upgraded electronic aspect make the auto-focusing function of teleconverter able to adapt to more lens, such as the EF70-200MM F/2.8 L IS II, the EF70-200MM F/2.8 L IS II USM and most of the lens can achieve automatic focusing.
Suit for Below EF Camera Lens:
EF 135MM F/2L USM
EF 200MM F/2 L IS USM
EF 200MM F/2.8 L II USM
EF 200MM F/1.8 L USM
EF 200MM F/2 L IS USM
EF 300MM F/2.8L IS USM
EF 300MM F/2.8L USM
EF 300MM F/4 L IS USM
EF 300MM F/4 L USM
EF 400MM F/2.8 L IS II USM
EF 400MM F/2.8 L IS IS USM
EF 400MM F/2.8 L IS USM
EF 400MM F/4L DO IS USM
EF 400MM F/5.6 L USM
EF 500MM F/4 L IS USM
EF 500MM F/4.5 L USM
EF 600MM F/4L USM
EF 600MM F/4L IS USM
EF 800MM F/5.6L IS USM
EF 100-400MM F/4.5-5.6L IS USM
EF 70-200MM F/2.8L IS USM
EF 70-200MM F/2.8L IS II USM
EF 70-200MM F/2.8L USM
EF 70-200MM F/4L IS USM
EF 70-200MM F/4L USM
EF 300MM F/2.8L IS II USM
EF 400MM F/2.8L IS II USM
EF 500MM F/4L IS II USM
EF 600MM F/4L IS II USM
EF 1200MM F/5.6L IS II USM                                                                                             
And you can use it with below cameras in Automatic Focus function:
for Canon 5D, 5DII, 5DIII, 6D, 7D, 10D, 20D, 30D, 50D, 350D, 400D, 450D, 500D, 550D, 600D, 600Da, 650D, 1000D, 1100D.

NOTE:
1, The shooting environment, resolution and the brightness should be ideal.
2, The AF Point should be adopted the free selecting focus mode.
3, For Canon cameras outside the list have not been tested. In generally, if the camera focus system is advanced, it can realize automatic focus.
4, When Teleconverter EF 2X is attached,the lens maximum aperture will be smaller by 2 stop.In the above two case, the camera will compensate the exposure auto matically.

Specification:
The Magnification: 2 times
Coating: multi coating
Lens composition: 9 elements in 5 groups
Item size: 7.2 * 7.3cm / 2.8 * 2.9in(D * H)
Item weight: 348g / 12.3oz
Package size: 13 * 9.5 * 9cm / 5.1 * 3.7 * 3.5in
Package weight: 439g / 15.5oz

Package List:
1 * Teleconverter Extender
2 * Protective Covers
1 * Bag
1 * User Manual(Chinese & English)

 

Precautions:

1, do not watch the sun and the strong light source by installing a lens with a magnification lens or a camera with a magnifying lens and a lens, which can cause visual damage. In particular, do not observe the sun directly by installing a lens with a magnification, as this can lead to blindness.
2, please do not install the lens with a magnification or installed with a magnification lens and lens camera does not cover the lens cover placed in the sun. After the sun is focused, it may cause a fire.
3, do not put the magnification on the temperature is too high, such as in the sun in the car. High temperature can cause a doubling mirror failure.
 
★ Increasing the mirror with this lens may cause the autofocus to be incorrect. If your camera has auto focus fine tuning, use auto focus fine tuning. If your camera does not have automatic fine-tuning function, use autofocus when auto focus is not accurate enough.
★ If there is no auto focus is not smooth, because the original lens is too small aperture, and then reduce the amount of 2 times the aperture back light to reduce the amount caused by twice. Use manual focus at this time.
 
Assembly and disassembly magnification
You should first assemble the lens to the lens, and then the lens assembly to the camera. Disassembly should be carried out in the opposite steps of assembly.
When removing the magnification from the lens, push the release lever in the direction of the arrow and turn the magnifying mirror counterclockwise.
 
Use the maximum aperture when increasing the magnification
Use Yongnuo three generations 2 times magnification, the lens of the largest aperture by 2 files smaller. In both cases, the camera will automatically compensate for exposure.
 
Precautions for use
It is best not to use the magnification overlay, otherwise, the camera's optical performance will be reduced, and the use of built-in exposure time, there will be exposure error.
In order to maintain the accuracy of the autofocus effect, the autofocus speed will slow down when the magnifier is used.
When the lens is brought from the cold to the warm place, the lens surface and internal may appear condensation. In order to prevent condensation, remove the lens from the cold to the warmth before the first lens into the sealed plastic bag, the lens gradually warming, and then come out to use. When moving from a warm place to a cold place, the same method is used.

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