Sep
06
Canon EF 300mmCanon DSLR users  have two new lenses to play with as the digital imaging giant released its latest professional telephoto lenses.
The Canon lenses are the the EF 300mm f/2.8 L IS II USM and the EF 400mm f/2.8L IS II USM. These two telephoto lenses incorporate Canon’s new optical design. Both Canon lenses ar150e light weight, a result of employing titanium and magnesium alloy.
Lens flare are minimized with its Sub Wavelength Structure coatings and the water-repellent Fluorine coatings on the front and rear elements.
Canon lens have been installed with a new IS mode that gives the lens more stabilization during exposure.
There is also a ‘Power Focus’ mode installed which is dedicated for video shooting. Other upgrade of the Canon EF 300mm f/2.8 L IS II USM and the EF 400mm f/2.8L IS II USM lens include a AF stop button that is repositioned for easier access.
According to Canon in a press release “Both lenses offer a constant f/2.8 aperture, allowing photographers to shoot at faster shutter speeds and capture clear shots of fast-moving subjects. The wide aperture also allows users to creatively isolate their subjects from the background, with a nine-blade circular iris creating dramatic and striking background blur that instantly adds beauty to an image.
Fast, quiet Auto Focusing (AF) is provided by a ring-type USM, new dedicated AF algorithms and a new high-speed CPU, which offer quick and accurate focusing during shooting. Photographers can also utilise full-time manual focusing functionality, which enables the adjustment and fine-tuning of focus even when the AF system is activated, providing even greater control over image capture.
A new Power Focus mode aids focusing during video shooting, allowing the photographer to smoothly adjust focus during filming by twisting the focus recall ring.
Both new models are compatible with the new set of Canon lens extenders designed for L-series super-telephoto lenses. Manufactured to complement the new optical systems featured in both lenses, the Extender EF 1.4x III and Extender EF2x III will allow professionals to instantly extend the focal length of either lens by 1.4x or 2x respectively – enabling the capture of high quality, detailed images of subjects that may typically be beyond reach.”
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