Century Optics 2.0X Tele-Converter Bayonet for Canon GL1 & GL2
The Century Optics 2X Tele-converter is a front-mounting accessory that provides greater telephoto reach. Available in popular bayonet and 58mm screw mount, the 2X Tele-converter instantly shifts the focal length range in the telephoto direction.
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.