You use a teleconverter to double the focal length of a lens resulting in a telephoto effect. This inexpensive attachment will convert a 50mm lens effectively to a 100mm telephoto.
The converter fits between the lens and the camera body. The disadvantage though is you reduce the light passing through the lens by two stops. A converter therefore is only a budget way to achieve zoom status. It is always preferable, if finances allow, purchasing a new auxiliary zoom or telephoto lens.
The two brands we stock are Jessops and Kenko. Made in Japan, the Kenko has the highest quality due to the 7-element lens option compared to the Jessops 4-element configuration.
This Jessops set of three tubes is able to provide over 1:1 reproductions with a 50mm lens but it is not compatible with the Canon EOS300 or EOS55 film cameras.
* Extends the focal length of your existing telephoto lens by a factor of 2, bringing the subject closer.
* Fully multi-coated optics to reduce ghosting and flare.
* Suitable for Canon film and digital SLR cameras that utilise the Canon EF fitting (all EOS series cameras).
* Autofocus is maintained for lenses with a maximum aperture of F4 or faster (e.g. F2.8), a limit set by the Canon body.
* Slower lenses may be focused manually using the camera's focus confirmation indicators.
* Not suitable for EF-S mount lenses, which are not intended for telephoto use. Will give its best performance when used with prime lenses.
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