Shulou(Shulou.com)11/24 Report--

Thank CTOnews.com netizens and independent photographers for their clue delivery! CTOnews.com October 25 news, Canon recently released the RF10-20mm F4 L IS STM lens will be on the market, the Bank of China price of 17699 yuan.

The introduction of Canon RF10-20mm F4 L IS STM lens attached to IT House is as follows:

Canon said that with the advantages of large bayonet diameter and short rear focus distance of the EOS R system, the new lens uses a variety of special lenses and advanced coating technology to achieve small lightweight, while providing an amazing ultra-wide viewing angle and L-level high-level optical performance. The RF10-20mm F4 L IS STM also has a built-in IS image stabilizer to achieve level 5 image stabilization (CIPA standard). The image stabilization function built in the lens and the camera body anti-shake control can achieve an anti-shake effect of up to level 6 (CIPA standard) 3.

Canon RF10-20mm F4 L IS STM lens uses a variety of Canon's new optical technology, so that the image quality of the edge of the picture has a sharp performance in the whole zoom range. The lens uses three aspheric lenses, one super UD lens which can effectively suppress chromatic aberration, and three UD lenses which can comprehensively suppress multiple aberrations (including a UD aspheric lens). Through optimized optical design and distortion correction by the camera body, the Canon RF10-20mm F4 L IS STM lens achieves L-level high picture quality. It can achieve the nearest focus distance of about 0.25m and the maximum magnification of about 0.12x (20mm time) in the whole zoom range. A shorter recent focus distance can help the photographer to shoot a more prominent close-up of the subject, enhance the wide-angle and unique perspective, and shoot a shocking image.

Canon RF10-20mm F4 L IS STM uses air spherical coating (ASC) and subwavelength structure coating (SWC) with better anti-reflection effect than conventional evaporation coating, which can significantly reduce glare and ghosts at the edges of large curvature lenses, such as wide-angle lenses. The full focal section of the lens has a F4 constant aperture, and nine aperture blades are used to form a circular aperture, which can provide a nearly circular spot shape, resulting in a beautiful and smooth virtual effect.

Canon RF10-20mm F4 L IS STM lens has the widest focal length extended to 10mm. Compared with EF 11-24mm f / 4L USM, the overall length of Canon 24mm F4 USM lens is shorter, and its weight is about half of that of EF 11-24mm f / 4L USM lens. Although it is an ultra-wide-angle lens, it has good portability due to the use of integrated sunshade design. In addition, because the center of gravity of the Canon RF10-20mm F4 L IS STM is closer to the camera, it is convenient to shoot even by hand or using a stabilizer.

The Canon RF10-20mm F4 L IS STM is about 112mm in length, 83.7mm in diameter and 570g in weight. Even with Canon EOS R5, the overall weight is only about 1308g (including camera batteries and memory cards). Canon RF10-20mm F4 L IS STM is unable to install the filter in the front of the lens because it uses the "light bulb" shape of the traditional ultra-wide-angle lens. The filter holder is designed at the back of the lens and can be inserted into user-cut gelatin filters such as ND filter, which is useful when shooting landscape photos or short films when the aperture is full open.

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