This professional accessory features multi-coated glass elements to deliver ultra-sharp images free of unwanted distortion or chromatic aberration. Equipped with a bayonet mount, installation to the front of the camcorder lens is quick, easy and secure. The unit comes complete with a lens support slider for mounting on standard 15mm support rods. The 2X Tele-Converter offers a 105mm diameter front for compatibility with many existing shades, matteboxes and accessories. In fact, Schneider Optics is so commited to the contention that a deep lens shade is vital to minimize flare and stray light, the attachment ships complete with a lightweight round shade with a built-in rectangular mask. Note that the Tele-Converter offers partial zooming, vignetting will start to occur very quickly at approximately 20% after you start to zoom towards the wide angle direction and increase through the zoom back producing a port hole effect at the full wide angle position.