[Bestbuy618 Digital Channel]RF Big Three is on its way When most people buy camera products, they are more concerned with whether the camera itself meets their own usage requirements. Although there is nothing wrong with this type of selection, for professional photographers, whether the brand/series has a quality native lens group is also one of the important criteria to consider when purchasing. For example, last year among Canon’s full-frame micro single camp, after the release of the EOS R will launch a number of RF mount heavyweight native lenses.
Among them, the RF28-70mm F2 L USM constant F2 aperture zoom lens is very impressive; it meets the user’s requirements for a large aperture lens of high quality, and the variable focal length is to realize the photographer’s dream of carrying only one lens for outdoor shooting. Canon released two lenses in the RF mount Big Three in August this year, namely the wide-angle zoom lens RF15-35mm F2.8 L IS USM and the standard zoom lens RF24-70mm F This time, the first to bring a wide-angle zoom lens RF15-35mm F2.8 L IS USM experience in the field, this lens compares to Canon’s classic EF 16-35mm f/2.8L III USM lens on the wide-angle end of the expansion of 1mm, its wide-angle end of view from 108 ° 10′ to 110 ° 30′, so you can shoot a more magnificent, spectacular picture. For the first time, the RF15-35mm F2.8 L IS USM incorporates an IS image stabilizer, providing stabilization equivalent to a maximum shutter speed of 5 steps.
The NANO USM ultrasonic motor built into the camera provides quiet, smooth autofocus.
The new lens maintains a comparable class to the EF 16-35mm f/2.8L III USM, with maximum diameter and length dimensions of about 88.5mm*126.8mm, and an overall weight of only about 1500 grams when paired with the EOS R.
When rotated, the focus and zoom rings are comfortable to hold and have just the right amount of damping. The lens has two control levers on the side, one for the hand/self-focus switching function and the other for the anti-shake on/off function. The lens has a full metal mount on the back. The RF15-35mm F2.8 L IS USM has the same impact resistance and sturdiness as other L-class lenses, and the overall waterproof and drip-proof construction is sealed at the lens joint and switch face, so you can shoot with confidence even in the event of an emergency.
With the RF large-diameter mount and short back focus distance, it can be equipped with a large-diameter lens near the imaging surface to improve image quality and take into account portability. At the same time, the front and rear lenses are coated with an anti-fouling fluorine coating, which makes them less susceptible to dust and stains, and the oil on the lens can be easily wiped off with a dry cloth, allowing them to effectively cope with harsh shooting conditions. As seen from the front, the RF15-35mm F2.8 L IS USM has a 9-blade circular aperture, which naturally expresses out-of-focus light spots and softens the boke The EW-88F hood is included with the lens and has a lotus-shaped shape with a matte thread design inside.
It is the same size as the EF 16-35mm f/2.8L III USM, allowing users to apply previously purchased filters directly to the new lens, saving money and effort.
We shot outdoors with the RF15-35mm F2.8 L IS USM 15mm and 35mm focal lengths, fixing the camera position and gradually reducing the aperture.15mm At the 15mm focal length, the resolution in the center of the frame is excellent, with only a slight degradation of image quality until F22. However, the edge position, which was relatively average at full aperture, showed a significant increase in image quality at the edge when the aperture was received at F8, and remained at F16.35mm at the 35mm focal length. The edge image quality has significantly improved, and there is only a slight loss of image quality at F22 aperture, but this has no effect on the overall picture effect.
a flare In terms of ghosting suppression, the new lens has the right amount of control, no particularly eye-catching ghosting effects, and we can easily erase ghosting through simple post-production.
The lens has a 12-group, 16-piece optical design that includes two UD (ultra-low dispersion) lenses and three aspherical lenses to reduce chromatic aberration, spherical aberration, and distorted aberration. Here to declare, I did not turn off the in-camera optimization effect when shooting, not that the RF15-35mm F2.8 L IS USM is not confident, but most people will basically open the in-camera optimization to shoot, pure straight out of the meaning is not very big.15mm35mm Due to the high quality of the lens itself and the in-camera optimization effect, the aberration control in the wide angle end of the 15mm is quite excellent, with only a very slight barrel distortion, and This allows users to confidently use the RF15-35mm F2.8 L IS USM for creative shooting of architecture, landscapes, portraits, and other subjects; the same lens’s dark angle suppression is also an important criterion for determining the lens’s quality.
15mm35mm When shooting at full aperture at 15mm and 35mm focal lengths (with in-camera optimization enabled), the RF15-35mm F2.8 L IS USM has an excellent ability to suppress dark corners. After receiving F5.6, 15mm focal lengths have virtually no dark corners, and 35mm focal lengths can achieve perfect results with just one stop. Chromatic dispersion RF15-35mm F2.8 L IS USM demonstrates the powerful optical process of Canon red circle lens once more. With the aperture fully open (and in-camera optimization enabled), no chromatic dispersion is visible in the image, in or out of focus.
In the test, we used 35mm focal length handheld shooting35mm Typically, the safety shutter speed of 35mm focal length is 1/40; if it is lower than this speed, the picture’s stability is greatly reduced. In the open IS image stabilizer, handheld limit shutter speed directly up to 1/8, the effect of anti-shake is clear when compared to photos taken in the closed state. Focusing, RF15-35mm F2.8 L IS USM built-in NANO USM ultrasonic motor, with the EOS R series of full pixel dual-core CMOS AF, still image shooting can achieve high-speed, high-precision autofocus, short film shooting can achieve smooth autofocus. Furthermore, the NANO USM ultrasonic motor supports full-time manual focus, allowing you to fine-tune the focus after autofocus, making the lens more user-friendly.
Exemplifications During the shoot, I was most impressed by its easy control and quick and accurate focusing. The IS image stabilizer is also included for handheld night photography, and the lens is lightweight enough to be used with the EOS R. This kit will not become a burden for photographers who shoot outdoors for an extended period of time.
Photographers who enjoy taking landscape photographs can buy with confidence.