Analysis of New Lens of Large Aperture and Super Long Jiao Canon Micro Single Camera

Microsingle camera At the early stage of development, the relevant micro single lens still continued the specifications of the SLR era, big three yuan, small three yuan, hundred micro... With the development of micro single camera, the corresponding micro single lens has gradually formed a system. Thanks to the design flexibility brought by the short rear focus distance and large aperture, many lens specifications that are not available in the era of SLR have also emerged. Recently, Canon released two new products of RF lens system. These two new lenses are a bit interesting. Today, we will give you a detailed introduction.

Canon RF24-105mm F2.8 L IS USM Z

At first glance, many people think that this model is a combination of 24-70mm F2.8 and 24-105mm F2.8 lenses, which provide a wider pan focus range and also incorporate a constant F2.8 aperture, but the actual situation is not so simple.

In fact, Canon is based on the concept of cross-border development, integrating the needs of photography and video shooting. The focal section of the lens is 24-105mm, covering the wide-angle to mid and far focal sections, which can be used to shoot scenery, humanities, sports and other scenes. At the same time, F2.8 constant large aperture can not only bring excellent background virtualization effect, but also bring sharp pictures in dim light.

RF24-105mm F2.8 LIS USM Z adopts 18 sets of 23 pieces of optical configuration, including 3 aspherical lenses and 4 UD lenses, which can well compensate spherical aberration, color aberration, etc., and can obtain high image quality from the center to the edge of the picture. The lens also adopts ASC coating, which can effectively suppress glare and ghost.

In order to meet the needs of professional short film users, Canon has designed an electric zoom adapter PZ-E2/PZ-E2B (sold separately) for this lens, so that it can zoom smoothly and adjust the zoom speed with high accuracy. The installation and removal of the electric zoom adapter is very simple and can be completed without special tools. The last Z of this lens model means electric zoom.

This lens has a new light ring, which can obtain smooth aperture operation when shooting video. To avoid recording operation sound, the aperture ring rotates without positioning, and the operation is smooth. Generally, when taking photos, the aperture is adjusted at least by 1/3 level, while this lens uses an aperture ring when taking videos. The aperture can be adjusted at 1/32 level, which is more suitable for the habit of video shooting.

NANO USM ultrasonic motor can provide quiet, high-speed and high-precision automatic focusing. Dual NANO USM ultrasonic motors can drive Focusing lens group and floating lens group improve the flexibility of lens movement. In order to suppress the breath effect during video shooting, the focusing breath correction function of this lens can effectively suppress the breath effect when used with a camera that supports this function.

The lens is equipped with an optical anti shake mechanism, which can achieve 5.5 level shake compensation effect. When matched with EOS R series models with body anti shake function, the coordinated anti shake of lens+body can achieve up to 8 levels of shake compensation effect. This lens is also the first Canon standard zoom lens equipped with the same anti shake mode switch for telephoto lens. The three IS anti shake modes can correspond to different shooting scenes.

The lens adopts the internal zoom design, and the lens length will not change, so that the center of gravity can be kept unchanged during use, and the shooting can be more stable. This lens also comes with a tripod seat, which is also rare in standard variable lenses. This is also for the stability of video shooting.

The volume and weight of the RF24-105mm F2.8 LIS USM Z lens are well controlled while taking into account the wide focus section and constant large aperture. Lens size is about Φ 88.5 × 199mm, weight excluding foot rest is about 1330g, filter aperture is 82mm. Although it is much larger than the standard zoom lens, it is not too bulky.

To sum up, RF24-105mm F2.8 LIS USM Z is not a simple photographic lens, but a product that integrates the dual needs of photography and video recording. Thanks to the design flexibility of the new system, the volume and weight of this lens are well controlled while it has super ternary lens specifications.

Canon RF200-800mm F6.3-9 IS USM

This lens is also the first Canon RF telephoto zoom lens with a long focal end of 800mm. Moreover, thanks to the design flexibility brought by the short rear focus distance and large aperture, the RF200-800mm F6.3-9 IS USM lens is absolutely compact and lightweight in the ultra telephoto lens. Less than 32cm in length and 2050g in weight have better mobility.

Canon RF200-800mm F6.3-9 IS USM adopts 11 groups of 17 pieces of optical structure and is equipped with three UD (ultra low dispersion) lenses, which has good color aberration correction effect and achieves high image quality performance from the center to the edge of the picture. The zoom lenses are divided into 6 groups, and the image quality fluctuates all the time when zooming. Stable image quality output can be obtained within this focus range.

The lens is equipped with a 9-blade circular aperture, which can achieve the nearest focusing distance of 0.8m and the magnification of 0.25 times at the 200mm end. The lens is equipped with an IS optical anti shake mechanism, which can achieve a shake compensation effect of about 5.5 gears. NANO USM ultrasonic motor provides a strong focusing driving force for this telephoto lens, so the focusing speed is very fast.

RF200-800mm F6.3-9 IS USM lens adopts external zoom design, and the wide zoom ring is attached with rubber material, so it is easy to zoom. The zoom damping adjustment ring below the zoom ring can change the damping when operating the zoom ring according to the actual needs of the user. The two Fn keys can assign different functions to improve shooting efficiency and operation convenience according to personal usage habits.

RF200-800mm F6.3-9 IS USM lens is equipped with an optical hand shake compensation mechanism. The jitter can be detected through the gyroscope sensor of the lens, and the jitter compensation effect of 5.5 level shutter speed can be obtained. With anti shake body EOS R5 When used together, the body and lens can achieve coordinated anti shake, and the 800mm end can achieve 5.5 level anti shake.

Canon RF200-800mm F6.3-9 IS USM lens is equipped with NANO USM ultrasonic motor, which provides high-speed and accurate focusing experience, but also makes it quieter and helps to miniaturize the lens. Although it is not a L-level lens, the RF200-800mm F6.3-9 IS USM lens has good resolution performance in all focal sections, and also has good performance in anti glare, ghost, distortion control and dark angle.

The price of this lens is less than 15000 yuan. It is an ultra long telephoto lens with high cost performance. If equipped with our own 1.4x or 2x zoom lens, the long focus end can be extended more than 1000mm and used with EOS R series models with bird eye recognition and aircraft recognition functions. It is very suitable for ecological photography, aviation and aerospace theme photos.

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