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Questo articolo non disponibile in Italiano
August 2010

Canon has announced the EF8-15mm f/4L Fisheye USM L-series lens – the world’s first fisheye zoom lens to offer both circular and full frame images – that provides outstanding image quality, a constant f/4 aperture throughout the zoom range and a robust design.

The zoom lens will replace the EF15mm f/2.8 Fisheye in the Canon lens range and when paired with Canon full frame DSLR bodies, such as the EOS 5D Mark II or the EOS-1Ds Mark III, professional photographers can choose to capture circular or full-frame fisheye images, allowing them to view a scene in a completely new and unique way. This image choice provides enhanced creative flexibility when shooting scenes such as the night sky, where the full 180º horizontal and vertical fields of view (FOV) allow every detail to be captured with incredible clarity in one image.

When used with EOS DSLRs that feature APS-C or APS-H sensors, the EF8-15mm f/4L Fisheye USM produces a more traditional, full frame fisheye view. A zoom-lock mechanism on the lens body allows the range to be limited to the focal length that ensures the best possible full-frame view without unsightly vignetting around the edge. ‘C’ and ‘H’ markings can be found next to the zoom operation ring, indicating the wideangle zoom position where vignette-free shooting is possible with either sensor, allowing photographers to achieve optimum results with any EOS body.

Advanced optics for professional imaging

The EF8-15mm f/4L Fisheye USM benefits from over 70 years of Canon optical engineering and boasts 14 lens elements in 11 different groups, including one aspherical and one Ultra-low Dispersion (UD) element to correct chromatic aberration and produce high-quality, high-contrast shots with excellent colour reproduction.

Ghosting and flare caused by strong light sources can be a particular challenge when shooting at such a wide angle – to counteract these artefacts, all lens elements have been covered with Canon’s Super Spectra Coating. The inner surface of the front element also features Canon’s SubWavelength Structure Coating (SWC), which uses tiny cone-like structures, shorter than the wavelength of visible light on the surface of the lens element, to gradually slow light down until it is at the same speed as it travels through glass, removing the risk of flare occurring before the light reaches the sensor.

To maintain optimum image quality, the front and rear lens elements of the lens also feature a Fluorine Coating that actively repels water, dust and dirt, thus leaving the lens unobstructed by particles and making it much easier to clean.

Fast, accurate focusing and low light performance

The ultra-wideangle zoom of the EF8-15mm f/4L Fisheye USM offers a fresh take on sporting action or architecture shots, while the constant f/4 aperture allows faster shutter speeds to be used for capturing natural looking images in low light.

A ring-type ultrasonic motor (USM), provides quick and accurate focusing when shooting and enables a full-time manual focus functionality allowing photographers to adjust the focus of any shot, even when the AF system is activated, for even greater control over image capture and improved creative flexibility.

Built for professional performance

The EF8-15mm f/4L Fisheye USM lens features a high-grade physical design that helps to give it a high resistance to both dust and water – this enables it to be used in a range of challenging situations and, when used with a professional EOS body, in the harshest weather conditions. The external design features a new exterior texture, for a high quality look and feel indicative of all new L-series lenses.

High quality accessories

The EF8-15mm f/4L Fisheye USM lens comes supplied with a dedicated lens cap, lens pouch and a felt-lined lens hood (EW-77) to prevent lens flare when shooting at the 15mm end of the zoom range.

EF70-300mm f/4-5.6L IS USM zoom

The compact EF70-300mm f/4-5.6L IS USM zoom lens is only 143mm long.

Canon has also announced the EF70-300mm f/4-5.6L IS USM lens that is designed to answer the growing demand from photographers for a high performance zoom lens that offers outstanding mobility and versatility.

The compact (143mm) design of this 4.3x zoom lens has the build quality that photographers have come to expect from Canon’s acclaimed L-series lenses. With its impressive focal range and travel-friendly size, the EF70-300mm f/4-5.6L IS USM zoom is ideally suited to professionals and advanced amateur photographers who want to capture portraits, nature and action shots in superb detail.

Elements and coatings for image quality

Thanks to two ultra-low dispersion (UD) elements and a floating lens group, the EF70-300mm f/4-5.6L IS USM lens captures stunning high-contrast, high-resolution images with low levels of chromatic aberration throughout the zoom range. The lens makes use of Canon’s Super Spectra Coatings, reducing ghosting and flare to ensure the highest possible image quality and minimising the requirement for extensive post-shoot image processing.

Canon’s advanced optical Image Stabilizer (IS) provides photographers with a four-stop IS advantage that allows you to shoot sharp images, even when shooting at maximum zoom or in low light conditions, using slower shutter speeds than normally possible when shooting handheld.

The lens’ eight-blade circular aperture offers excellent bokeh that’s ideal for portraiture, producing a more pleasant background and creatively isolating the subject.

The lens’ autofocus is fast and quiet thanks to a ring-type USM AF motor, combined with the independent lens CPU and advanced AF algorithms to enable accurate, reliable focusing in all conditions. As with all Canon L-series lenses, full time manual focus override is possible, allowing photographers to manually focus, even when the AF motor is engaged. With a minimum focusing distance of 1.2m (3.9ft) throughout the zoom range, photographers can achieve sharp results, even when very close to the action.

Robust performance in all conditions

The EF70-300mm f/4-5.6L IS USM offers exceptional build quality and is ideal for daily use by professionals and advanced amateurs. The lens includes environmental protection, allowing photographers to shoot in harsh conditions – even in the extremes of the desert or rainforest. Canon’s new Fluorine Coating also makes cleaning the lens easier, and prevents smears or streaking.

Professional accessories

As part of the L-series range, the EF70-300mm f/4-5.6L IS USM is supplied with a lens hood (ET-73B) and lens case (LP1424), as standard. In addition, an optional, dedicated tripod mount C (WII) can be directly attached to the lens. This allows it to be stabilised easily and the camera switched quickly from vertical to horizontal and back, without having to reposition the camera body on the tripod, perfect for fast-paced action with a variety of subjects.