Great cheaper converter - better than expected

Use the converter with a Canon 60D and the Canon EF 70-200 4.0 L IS USM.
The converter is supplied in a small leather case, which also serves at the same time for storage. Front and back cover are also there.

The teleconverter is good and solid processed and sits perfectly on the camera or lens is properly secured.
The electronics works perfectly, both when shooting and in the Exifs. Unfortunately, the panel Variegated from 4 to 5.6. But is not the end, in good weather it is still adequate enough to indemnify Portraits on if necessary.
From the picture quality it shows actually no deterioration, unless you zoom into extremely. Even the extremely sharp 70-200 Canon hardly suffers the converter, it's all still yet knackscharf!

Autofocus:
This is slower, but not extreme. An extreme situation I could not test (eg. Birds of prey). The only drawback, and therefore also a star deduction:
At dusk, the autofocus begins to pump, but has been able to focus everything. But is ok for such a product, even with the Canon converters I could see that already.

Conclusion:
Purchase is great, you can really recommend. Especially for people who do not necessarily want to buy a higher focal length. Super it is of course if you then have the 2.8 telephoto zoom, here then you end up with an aperture of. 4
For further inquiries, I can like to show images