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The 2x Tele-Converter is a front-mounting accessory that provides greater telephoto reach for the Canon GL1/GL2. Unlike typical rear-mounted telephoto extenders, the Century Tele Converter provides doubling of the indicated focal length (through the higher end of the zoom range) without light loss, along with front-mounting convenience. Note: Vignetting will occur from mid zoom range to wide angle producing a porthole effect which is common with all tele-converters.
