Teleplus MC7 DGX

The Kenko Teleplus MC7 DGX 2x Teleconverter is an easy and inexpensive way to increase the abilities of your lens without the expense of purchasing and carrying additional telephoto lenses. It features genuine Gate Array IC (Integrated Circuitry) meaning that the Kenko Teleplus MC7 DGX 2x Teleconverter maintains communication between the camera body and lens in the same way an original manufacturer's converter would. What's more, as a DGX converter it will also display the effective focal lengths in your viewfinder, so if you're using the 2x converter on a 200mm lens, a focal length of 400mm will be displayed. When used with lenses with a maximum aperture of f/4 or greater, auto focus will be maintained. The Kenko Teleplus MC7 DGX 2x Teleconverter can be used with lenses with smaller maximum apertures, but they may be limited to manual focus operation. Please note: Kenko teleconverters are not compatible with Canon EF-S lenses.

Magnification: 2.0x
Depth of field: 1/2 of prime lens
Minimum focusing distance: Same as prime lens
Lens construction: 7 elements in 5 groups
Diaphragm coupling:Fully automatic
Lens coating: Multi coating
Light loss: Approximately 2 stops
Barrel length: 36mm
Weight: 157g

Canon,Nikon and Sony fit.