Fluorite Zoom Lens with Optical Image Stabilization
Canon has satisfied the demands of experienced image makers for years through the power, design and quality of 35mm and broadcast TV lenses. Canon continues that tradition with the new 20x Professional L-Series Fluorite optical zoom lens for the XL2. The lens uses fluorite, a material that provides outstanding resolution, contrast, and color reproduction, especially in lightweight, high-magnification lenses. The fluorite element inside the lens defeats color aberration an effect that causes a reduction in sharpness, contrast and color. It precisely controls components of light providing an excellent balance of these three critical ingredients of picture quality. The unsurpassed image quality is unobtainable with conventional optical glass.
The XL2's lens is the equivalent of a 42.3mm -- 846mm lens on a 35mm still camera, when the XL2 is recording in 16:9 widescreen format. When recording video in the TV-standard 4:3 aspect ratio, it is the equivalent of a 51.8mm -- 1036mm lens on a 35mm still camera.
In addition, the XL2 features Canon's superb Super Range Optical Image Stabilization (OIS) system (VAP type). The system corrects camera shake instantly so that even hand held shots at full telephoto and shots taken from a moving car are smooth and steady.
Previously, optical image stabilizers have used a gyro sensor to detect camcorder vibration. The data from the sensor would control a vari-angle prism that continuously corrected the path of the incoming light. Super Range goes one step further by examining the image after it is received by the CCD to detect any low-frequency vibrations missed by the gyro. This data is fed back to accelerate and refine the movement of the vari-angle prism. This greatly improves performance for low frequency vibration, resulting in the most advanced optical image stabilization available today.
And since the XL2's OIS system is optical, there isn't the loss of image quality that is inevitable with electronic image stabilizers. It perfectly complements the high picture quality of the DV format.
Canon's 20x Professional L-Series Fluorite lens features a fast aperture of f/1.6, variable to f/3.5 at full telephoto. This maximum aperture of f/1.6 aids in capturing quality video in low light conditions. 72mm filter thread
With a standard 72mm filter thread, the 20x Professional L-Series Fluorite lens offers the availability of a wide variety of filters from Canon and other suppliers. 6 blade iris diaphragm
A six-blade circular iris is used in the XL2 for professional exposure control. This helps to deliver stunning video and still photos. 2 independent ND filters
The 20x Professional L-Series Fluorite optical zoom lens includes two neutral density filters to help control light -- for example under bright, sunlit conditions, or when less depth of field is desired. The two built-in filters, 1/6 ND and 1/32 ND, can be used independently. Electronic focus and zoom ring
The focus ring and the zoom ring are independent controls on the 20x lens. They are servo controlled and the speed can be changed by the speed of the rotation of the ring. There is also a zoom control on the handgrip and one on the top handle. Zoom preset position
This function allows memorization of a zoom point, so that the lens can return to that framing by a push of the button. The speed of the zoom can easily be controlled. Focus preset position
This function allows memorization of a focus point, so that the lens can return to that focus by a push of the button. A 'pull focus' can easily be accomplished. The speed of the focus can easily be controlled.