Viltrox  C-AF 2X Teleplus

Feature:

1. Viltrox C-Af 2x teleplus is made of high quality coating optical glass. This teleconverter has the effect of multiplying the focal length of all Canon EF lens by 2.0x, and it can use the camera's auto focus function perfectly not changing the Exif information.
2. These glass elements were designed to match the optical quality of the prime lens(even the edges) and telephoto zoom lenses. The optical design of the elements and light path is wide enough not to cause vignetting.
3. C-AF 2x teleconverter are specially for 100mm or more long prime lens, Such as 300mm f/2.8 lens, together with 200-500mm telephoto lens, it can used for telephoto lens and prime lens. But it's not recommended to use lower than 60mm short lens.
4. C-AF 2x Teleplus automatic teleconverter have the true array IC, it means teleconverter the solely circuit maintain the signal integrity between the camera body and lens.

Specification:

Mount type: Canon EF mount lens
Amplification: 2x
Depth of field: 1/2 of the original lens
Minimal focal distance: Same with original lens
Constitution of the lens: 7 glasses, 4 groups
Focus mode: Automatic auto focus
Coating: Multi-coating
Exposure factor: Approx. 4x(equal to aperture 2x)
Diameter and length: Approx. 68*51mm
Weight: Approx. 132g
Front cap: camera cap
Rear cap: lens dust cap