Viltrox C-AF 2XII TELEPLUS can make the focal length of all the for Canon EF lens increased to 2 times,and the auto-focus function of the original camera lens can be used perfectly, and don't change the EXIF information.
C-AF 2XII is only compatible with fixed focal length L-series lenses 135mm and over, as well as 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.
Compatible for Canon EF Mount Lens(not for Canon EF-S lens).
Can increase the original lens focus length to 2 times.
Support lens Auto Focus function and won't affect to Exif information.
Adopt 7 optical glasses, 4 groups, the depth of field is half of the original lens.
Good helper for long distance photography.
With upgraded USB firmware interface.
Mount type:Canon EF-Mount lens
Depth of Field:Half of the original lens
Min stacking focal length:Equal to the original lens
Constitution of the lens:7 glasses, 4 group
Focus mode:Auto focus
Exposure factor:Approx. 4 times (equal to 2 aperture )
Diameter and length:Approx. 68×51mm
Weight: Approx 154g
1 x Viltrox C-AF 2X II TELEPLUS Adapter
1 x Product Manual
1) C-AF 2XII TELEPLUS is compatible only for EF canon series lents NOT with EF-S Series lents.
2)Using C-AF 2XII TELEPLUS and canon EF-70-300mm zoom lent the imagine live a little bit color tone.
3) when you select 300mm maximum focal length form zoom module the autofocus not work fine.
I contacted VILTROX company and I asked them if an update firmware will be possible for this 2x multiplier.
Just got this, and so far it works great.
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