The Canon XC10 4K Camcorder incorporates a Canon 4K video lens that leverages proprietary Canon optical technologies derived from years of experience in developing Cinema, Broadcast, and EF Series lenses. This 10x wide-angle optical zoom lens offers a focal range of 24.1-241 mm for photos and 27.3-273 mm for movies. The use of UD (Ultra-low Dispersion) and Hi-UD lens elements helps compensate for chromatic aberrations and provides a compact size. An innovative retractable lens barrel structure integrating internal guide bars helps facilitate precise lens movement during zooms, and extends the lens barrel by a mere 36.2mm. The XC10 Camcorder's 4K Wide-Angle 10x Zoom lens features separate focus and zoom rings for professional-style manual lens operation. (Auto Focus can also be engaged, and focus can be controlled via the optional Canon RC-6 wireless remote controller or web browser via the XC10 4K Camcorder’s Wi-Fi connection.) The rotation angle of the zoom ring is approximately 71°, allowing for rapid manual zooming. Clearly engraved focal length marks and the WIDE and TELE mechanical ends combine to further improve usability.