Features:
With the large bayonet diameter and short back focus distance of the EOS R system, as well as special lenses such as aspheric lenses, UD lenses, and advanced coating technologies such as ASC,lens with a constant maximum aperture of F2.8 provides great expectations. The high-level optical performance is also equipped with IS image stabilizer and Nano USM drive motor suitable for photo and video shooting. In addition, the RF15-35mm F2.8 L IS USM has further expanded the focal length of the wide-angle end, enabling more creative possibilities.
Describtion:
Provide support for IS image stabilizer and Nano USM motor
With the advantages of the large mount diameter and short rear focus distance of the EOS R system, the RF15-35mm F2.8 L IS USM lens has greater design flexibility, so the two lenses have also become Canon's first full-frame F2.8 wide-angle zoom lens with IS image stabilizer and standard zoom lens. When taking still photos, the lens cooperates with EOS R or EOS RP cameras to achieve dual IS detection. While the lens IS function works, it can also detect the amount of shake from the image information of the camera CMOS image sensor. By comparing and analyzing these two types of information, it is possible to accurately detect and correct low-frequency shakes that are difficult to detect by the lens alone (slow body shake caused by breathing, etc.), thereby achieving a maximum equivalent to about 5 steps of 2 shutter speeds Hand shake compensation effect. When you are creating a movie, you can also use the camera's image information to detect the amount of blur without correction of the IS function of the lens. At the same time, through the more powerful communication capability of the RF bayonet, you can use the camera ’s five-axis digital IS and IS The function of the RF lens is controlled cooperatively, and the combined IS function is realized to obtain a more powerful image stabilization effect.
provide support for IS image stabilizer and Nano USM motor
With the advantages of the large mount diameter and short rear focus distance of the EOS R system, the RF15-35mm F2.8 L IS USM lens has greater design flexibility, so the two lenses have also become Canon's first full-frame F2.8 wide-angle zoom lens with IS image stabilizer and standard zoom lens. When taking still photos, the two lenses cooperate with EOS R or EOS RP cameras to achieve dual IS detection. While the lens IS function works, it can also detect the amount of shake from the image information of the camera CMOS image sensor. By comparing and analyzing these two types of information, it is possible to accurately detect and correct low-frequency shakes that are difficult to detect by the lens alone (slow body shake caused by breathing, etc.), thereby achieving a maximum equivalent to about 5 steps of 2 shutter speeds Hand shake compensation effect. When you are creating a movie, you can also use the camera's image information to detect the amount of blur without correction of the IS function of the lens. At the same time, through the more powerful communication capability of the RF bayonet, you can use the camera ’s five-axis digital IS and IS The function of the RF lens is controlled cooperatively, and the combined IS function is realized to obtain a more powerful image stabilization effect.
RF15-35mm F2.8 L IS USM with 15mm ultra-wide viewing angle expands creative horizons again
The large aperture mount and short rear focus distance of the EOS R system significantly increase the freedom of lens design. Therefore, the RF15-35mm F2.8 L IS USM maintains the high image quality of the Canon F2.8 series wide-angle zoom lens, Extend the maximum wide angle to 15mm. With the 15mm ultra-wide angle, users can obtain more impactful viewing angles and perspective effects, regardless of shooting scenery and architecture, can further enhance the visual expression of video works. At the same time, the 15mm ultra-wide angle is also very helpful for shooting in narrow spaces. . The 35mm focal length of the lens can obtain a perspective close to the human eye, which can take into account daily street photography, food, environmental portraits and other living image creation.
As a new generation of Canon equipped with F2.8 constant maximum aperture lens, Canon RF15-35mm F2.8 L IS USM lens applies a variety of Canon new optical technologies, thus achieving the entire zoom range from the center of the screen to the edge Picture quality has improved once again. The lens adopts a 16 lens structure in 12 groups, and up to 5 special lenses are applied. Among them, 3 glass aspheric lenses are used to achieve spherical aberration correction, wide-angle lens distortion aberration correction and zoom lens Miniaturization and the use of two UD (ultra-low dispersion) lenses. Although the maximum wide-angle is 15mm, it can effectively suppress the occurrence of chromatic aberration and achieve a high level of sharpness.
In order to achieve higher image quality over the entire zoom range, the RF15-35mm F2.8 L IS USM lens uses ASC air spherical coating and SWC sub-wavelength structure coating technology. ASC air spherical coating technology forms a layer containing silicon dioxide and air on top of traditional vapor-deposited multilayer coatings. By using the characteristic that air has a lower refractive index than optical glass, the coating contains a certain proportion of air, thereby Achieved low refractive index, especially for nearly perpendicularly incident light, can effectively suppress ghost and glare caused by light reflection. The SWC sub-wavelength structure coating technology continuously changes the refractive index by forming wedge-shaped microstructures on the lens surface that are smaller than the wavelength of visible light. The possibility of glare and ghosting around the edges of the lens (such as a wide-angle lens).
The RF15-35mm F2.8 L IS USM lens has a constant maximum aperture of F2.8 at the full focal length, and uses a circular aperture composed of up to 9 aperture blades, which can provide a nearly circular aperture shape, resulting in beautiful and smooth Great blur effect. When combined with the F2.8 beam-compatible autofocus sensor on the camera, you can achieve higher autofocus accuracy.
Although the focal length of the wide-angle end has been extended from 16mm to 15mm, and features such as IS image stabilizer have been added, the size and weight of the RF15-35mm F2.8 L IS USM lens are basically the same as those of the EF16-35mm f / 2.8L III USM. The lens is approximately 126.8mm in length and 88.5mm in length and weighs approximately 840 grams. The filter diameter is 82mm. It is worth mentioning that the front lens of the lens is not a "bulb" type, and it is convenient to install a filter in front of the lens.
