Ecological and aerial photography optimization Canon RF200-800mm lens evaluation

After years of development, Canon Micro RF Lens has achieved remarkable results. This year, Canon has brought a new heavyweight product to photography lovers, which is 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. Today we will give you a detailed introduction.

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

Lens focal length: 200-800mm
Lens structure: 11 groups of 17 pieces
Aperture blade: 9 pieces (circular aperture)
Minimum aperture: 32-51 (1/3 grade as unit)
Nearest focusing distance: about 0.8m (200mm)
Maximum magnification: about 0.25 times (200mm)
drive System: NANO USM ultrasonic motor
Hand shake compensation effect: about 5.5 levels (based on CIPA test standard, focal length 800mm, when EOS R is used, pitch axis and swing axis directions)
Filter diameter: 95 mm
Maximum diameter and length: about Φ 102.3 × 314.1 mm
Weight: about 2050 g

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.

Introduction to lens appearance

Canon RF200-800mm F6.3-9 IS USM lens is painted in white, which is also one of the traditions of Canon telephoto lens. The mirror body adopts a new white paint with high reflectivity to the sunlight medium infrared ray, which can effectively restrain the temperature rise of the lens. In addition, the lens also adopts a double-layer structure of the outer layer of the lens barrel and the lens support layer. By optimizing the lens support position, the heat transmission path is controlled, so as to prevent the outer layer heat from directly transferring to the lens interior. The temperature of the lens tube is not easy to rise when shooting in the hot sun, so it has a good shooting experience.

White painted Canon RF200-800mm F6.3-9 IS USM lens

The lenses from top to bottom are white lens barrel, zoom ring, zoom damping adjustment ring, Fn button (2 keys), function paddle area (AF/MF switch, anti shake switch), focusing ring/multi-function control ring and tripod ring.

Lens adopts external zoom design

Zoom ring and zoom damping adjustment ring

RF200-800mmF6.3-9 IS USM The lens adopts an external zoom design, and the wide zoom ring is attached with rubber material, which makes it 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 according to personal usage habits to improve shooting efficiency and operation convenience.

Focusing ring/multi-function control ring

Canon RF200-800mm F6.3-9 IS USM lens integrates the focusing ring and multi-function control ring, and switches functions through the function lever on the side of the lens. The multi-function control ring is also one of the characteristics of Canon RF lens, which allows users to customize the distribution of sensitivity adjustment, shutter speed and other functions, making it easier for users to improve the shooting convenience.

Foot rest ring and foot rest

Canon RF200-800mm F6.3-9 IS USM lens is equipped with foot rest ring and foot rest bracket. The foot rest ring is not removable but can be adjusted. There are two strap holes on the tripod ring, which is convenient for the user to wear and tie the strap directly to the lens when shooting outside.

Close up of front mirror group

As an ultra long focal lens, the filter aperture of Canon RF200-800mm F6.3-9 IS USM lens has reached 95mm, and the front lens is coated with fluorine to prevent dust and oil contamination. The 12 metal contacts at the lens bayonet can transmit data with the body more efficiently and quickly.

Metal clip and 12 metal contacts

Like other Canon "white cannons", Canon RF200-800mm F6.3-9 IS USM lens is also equipped with a large round hood. The hood and the lens are installed together, which is very aggressive. The hood is installed in a rotating snap type, which is very convenient to use.

Circular shade

RF200-800mmF6.3-9 IS USM Although not an L-level lens, it also has high reliability for field shooting. The lens operating ring, switch and other movable parts adopt a waterproof and dust-proof structure.

Resolution test of each focal section of lens

In the resolution test, I used Canon full frame micro single with 45 million effective pixels camera EOS R5， Test the 200mm, 400mm, 600mm and 800mm ends of this lens. During the test, the aperture priority mode is used, the sensitivity is set to ISO 100, and the RAW+JPEG format is used for recording. The aperture changes step by step. Finally, 100% zoom in and capture the image center and edge for comparison.

The resolution of the lens at the 200mm end is very good, and the details of the center and edge of the picture are excellent when the aperture is fully open. The resolution at F8 and F11 is the best, while the resolution has decreased since F16, but even at the small aperture of F22, there are still many details of the picture.

The resolution performance of this lens at 400mm end and 600mm end is amazing. From the maximum aperture to F16 aperture, the details of both the center and the edge are very rich. The resolution at the minimum aperture of F32 decreases significantly, but considering that it is under the premise of 100% amplification, the resolution performance in actual shooting is also completely acceptable.

800mm The maximum aperture of the end starts from F9. From the above picture, we can see that the resolution performance of the central area of the image is very good from F9 to F22 aperture, and the edge area is only loose from F22 aperture.

Sharpness display of 800mm end live photos

The photo above is a pigeon I shot with EOS R5 and this lens. A 100% magnification of the photo shows that the details of the pigeon's eyes and feathers are very rich, and the overall imaging sharpness is very high.

Lens ghost glare and dispersion test

The optical structure of Canon RF200-800mm F6.3-9 IS USM lens is 11 groups of 17 pieces, including 3 UD (ultra-low dispersion) lenses. Good color aberration correction effect is obtained, and color bleeding is not easy to occur from the center of the picture to the periphery, achieving high image quality. In addition, the zoom lenses are divided into 6 groups, which can restrain the image quality fluctuation during zooming, and obtain stable image quality in the whole focus range.

200mm end ghost glare live shot

800mm end ghost glare live shot

During the test, we used the 200mm and 800mm lens to shoot the sun directly. From the actual shooting effect, there was only slight glare at the 200mm lens and excellent anti glare performance at the 800mm lens. In fact, in actual shooting, we don't shoot directly in the sun. This test is only to test the optical performance of the lens under extreme conditions. From the actual performance Canon RF200-800mm F6.3-9 IS USM lens performs very well in this respect.

In terms of dispersion, this lens shows excellent control ability. When the aperture of 200mm and 800mm ends are fully open, no dispersion can be seen. This has something to do with its excellent optical structure, and certainly not much to do with the aperture of this ultra long focal lens.

200 mm and 800 mm focal length dispersion control live shot

Lens dark angle and distortion test

Canon RF200-800mm F6.3-9 IS USM lens only has a very slight dark angle at the 200mm end and 800mm end when the aperture is fully open, which shows excellent performance. In the distortion test, this lens only has a very slight pillow distortion at the 200mm end, while there is no distortion at the 800mm end.

200mm end concealed angle test

800mm end concealed angle test

200mm end distortion test

800mm end distortion test

Lens focusing and anti shake test

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.

As can be seen from the video recording above, this lens is fast and accurate in focusing, without dragging mud and water. coordination Canon EOS R5 The second generation full pixel dual core CMOS AF technology can quickly lock the shooting subject. In ecological, sports and other photographic themes, users can capture more exciting moments.

RF200-800mmF6.3-9 IS USM The 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. When used together with EOS R5 with body anti shake, the body and lens can achieve coordinated anti shake, and the 800mm end can achieve 5.5 level anti shake.

Focus: 800mm, shutter time: 1/80s, aperture: F9, sensitivity: ISO 2500

100% enlarged screenshot

The above photo was taken by hand, with a focal length of 800mm and a shutter speed of 1/80s. With excellent anti shake performance, clear images can be obtained even if it is significantly lower than the safe shutter speed, and the details of the 100% enlarged photo are clearly visible.

Sample shot and summary

Let's take a look at some samples taken by Canon RF200-800mm F6.3-9 IS USM lens with EOS R5 fuselage. The theme involves urban scenery, bird ecology and rocket space, which is also the field of this telephoto lens.

Focus: 800mm, shutter time: 1/400s, aperture: F9, sensitivity: ISO 200

Focus: 800mm, shutter time: 1/640s, aperture: F9, sensitivity: ISO 200

Focus: 800mm, shutter time: 1/640s, aperture: F9, sensitivity: ISO 800

Focus: 800mm, shutter time: 1/1000s, aperture: F9, sensitivity: ISO 800

Focus: 324mm, shutter time: 1.3s, aperture: F9, sensitivity: ISO 100

Focal length: 227mm, shutter time: 0.6s, aperture: F7.1, sensitivity: ISO 125

Focus: 800mm, shutter time: 1/500s, aperture: F9, sensitivity: ISO 320

Focus: 800mm, shutter time: 1/60s, aperture: F9, sensitivity: ISO 2500

Focal length: 637mm, shutter time: 1/250s, aperture: F16, sensitivity: ISO 250

Focal length: 637mm, shutter time: 1/250s, aperture: F16, sensitivity: ISO 250

The emergence of Canon RF200-800mm F6.3-9 IS USM further expands the boundaries of RF lens system. This telephoto lens is widely used in sports, ecology, aerial photography and other subjects. Although it is not a red circle lens, the RF200-800mm F6.3-9 IS USM shows a very high standard in terms of both optical quality and lens workmanship. The image quality is satisfactory and the control is very easy. The price of 14339 yuan is not too high for such a telephoto lens, and it can achieve 1120mm or 1600mm telephoto performance with our own 1.4x and 2x telephoto lenses. If you like ecological or aerial photography, this telephoto lens is a must see choice.

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