Canon EF 16-35mm f/2.8 L USM II Lens

Canon EF 16-35mm f/2.8 L USM II Lens The Canon EF 16-35mm f/2.8 L II USM Lens is one of the most important lenses in Canon's lineup. T he Canon 16-35mm becomes the new standard for professional and serious amateur photographers alike in ultra-wide canon lenses. The new EF 16-35mm f/2.8L II USM lens delievers higher image quality at the wide-angle end, enhancing optical performance, resolution and contrast. Ultra-wide zoom lens - 16 to 35mm focal range, fast f/2.8 aperture Higher image quality at wide-angle end, enhancing optical performance, resolution and contrast 2 UD and 3 types of aspherical elements reduce aberrations for outstanding image quality High level dust and moisture resistance - designed for use in harsh conditions Inner focus design with Ultrasonic Motor (USM) for fast and virtually silent operation Circular aperture producing attractive background defocus 28cm minimum focus distance at all zoom focal lengths Optimized lens coating, reduces ghosting and flare Manual focussing enabled even during AF mode (full time mechanical focusing) Developed to succeed the high-performance EF 17-35mm f/2.8L USM, the EF 16-35mm f/2.8L USM has the leading wide-angle zoom range in its class. In response to increased demand for ultra-wide zoom lenses for 35mm SLR cameras, and digital SLR Camera's that tend to have a smaller frame size when compared to the 35mm, Canon has developed the EF 16-35mm f/2.8L USM. This is the first Canon EF lens to incorporate three types of aspherical elements (ground, replicated and Gmo [glass molded]) to effectively correct the aberrations that occur during zooming. And despite its longer zoom range the EF16-35mm f/2.8L USM delivers the highest image quality in its class. The EF 16-35mm f/2.8L USM has two UD (Ultra-low Dispersion) elements, which effectively correct the chromatic aberrations prone to occur in wide-angle lenses. As a result, colour fringing along the edges of the subject is virtually eliminated and both image resolution and contrast are exceptionally high. The inner focusing and ring type USM (Ultrasonic motor) ensures both silent and high-speed AF operation. By increasing the focusing group's power, a minimum focusing distance of 0.28m throughout the zoom range is attained. Since the lenses front element does not rotate during focusing, the effect of a circular-polarizing (PL-C) filter, attached to the lens, is retained during both focusing and zooming. The lens mount, switch panel, zoom ring and focusing ring use Canon's unique dust and moisture resistant design making this lens suitable for use in harsh environments. A drop-in, gelatin filter holder is provided at the rear of the lens. Canon 16-35mm Specifications: Focal Length & Max. Aperture: 16-35mm 1:2.8 Picture Size: 24 x 36mm Filter Diameter: 82mm Lens construction: 16 elements in 12 groups Closest focusing distance (m): 0.28m Focus drive: Ring-type USM Dimensions: 88.5mm dia. x 111.6mm Weight: 635g