Century 0XF-212B-00 (0XF212B00, 0XF 212B 00, 0XF/212B/00, 0xf-212b-00) 2.0X Extender 1/2" Bayonet Mount
In situations that make it difficult, dangerous, or even impossible to move in closer to fill the frame with a distant subject, a Tele-Extender is the perfect solution. Mounted between the camera and video zoom, the Tele-Extender doubles the lens' focal length -- enabling a shooter to capture faraway action in close-up. Once attached, the unit yields a 2-stop light loss and shallow depth of field.
If a zoom ranges from 9-144mm, a 2X Tele-Extender converts it in seconds to an 18-288mm. As a result, subjects that were previously out of range -- across a river, a stadium, or a police barricade -- now fill the frame. This doubling of the focal length results in a two-stop reduction in the amount of light reaching the focal plane, making it easy to isolate a subject from foreground and background. Wildlife videographers find this particularly helpful when shooting an animal whose natural camouflage causes it to blend with its surroundings. Reduced depth of field is also effective in shooting past visual barriers such as chain-link fences.