Quick Summary
The VILTROX C AF 2XII Teleplus is a 2x teleconverter lens extender adapter for Canon EF mount lenses. It is described as supporting auto focus, and it is intended to increase the focal length of compatible Canon EF lenses by 2 times. The listed compatibility note narrows use to fixed focal length L series lenses 100mm and over, plus the EF 70 200mm f/2.8L, EF 70 200mm f/2.8L IS, EF 70 200mm f/4L, and EF 100 400mm f/4.5 5.6L.
Who It Is Best For
This is suited to Canon EF lens users who want extra reach from a compatible telephoto setup. It will mainly appeal to photographers checking specific lens compatibility before buying, especially where auto focus support and an extender style solution are important.
What To Know Before You Buy
Compatibility is specific, so it is important to check your exact lens before ordering. The listed note limits use to fixed focal length L series lenses 100mm and over, plus the named EF telephoto lenses.
Pros: It is designed to double focal length and support auto focus on compatible lenses.
Cons: It is not described as a universal fit, so exact lens matching matters.
Common Buyer Questions
Will this fit every Canon EF lens?
No. It is described as compatible with Canon EF mount lenses, but the compatibility note limits use to specific lenses.
Does it increase focal length?
Yes. It is described as making the focal length of compatible Canon EF lenses 2 times longer.
Does auto focus still work?
It is described as supporting auto focus function on compatible lenses.
Which lenses are mentioned in the compatibility note?
The note mentions fixed focal length L series lenses 100mm and over, plus the EF 70 200mm f/2.8L, EF 70 200mm f/2.8L IS, EF 70 200mm f/4L, and EF 100 400mm f/4.5 5.6L.
Is this an adapter or a teleconverter?
It is described as a 2x teleconverter lens extender adapter.
Key Details
| Detail | What it means in use |
|---|---|
| 2x teleconverter | It increases the focal length of compatible lenses by 2 times. |
| Canon EF mount compatibility | It is intended for Canon EF mount lenses. |
| Auto focus support | Compatible lenses can keep auto focus function. |
| Compatibility note | Listed for fixed focal length L series lenses 100mm and over, plus specific EF telephoto lenses. |
| Optimised lens coatings | They are described as helping to minimise ghosting and flare. |
| Upgraded USB firmware interface | It includes a USB firmware interface for updates. |
Final Buying View
The VILTROX C AF 2XII Teleplus is a focused choice for Canon EF users who need a 2x teleconverter and want auto focus support on compatible lenses. The key point is to match your exact lens carefully, as the compatibility note is specific. If your lens is on the listed compatible group, it offers a clear way to extend reach without changing your camera system.
Check your lens model against the compatibility note before ordering, then choose with confidence if it matches your setup.













