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Replacing the "flow rearview mirror" with the camera and display screen has become an important configuration for many luxury independent brands to flaunt their scientific and technological content since Cadillac was first introduced to the market.

For example, luxury brands include Land Rover Aurora, and our own brand WEY is an advocate of this technology. Of course, Cadillac XT5 and CT6 have been equipped with second-generation streaming rearview mirrors.

But this technology is also controversial: is the streaming rearview mirror a technological advancement or a chicken rib? Let's talk about the advantages and disadvantages of this technology in different usage scenarios according to the actual test drive:

First of all, the biggest problem is visual habits.

The traditional interior rearview mirror is just a mirror, and the visual range of different models is basically the same, but when you switch from the ordinary mirror to the streaming rearview mirror, the result is like you have a new pair of glasses-although the new glasses may be better, you still have to adapt.

When most media people first contact the streaming media rearview mirror, they will feel a little dizzy when staring at it for a short time, especially the rearview mirror of individual models is very close to your head (such as Land Rover Aurora), and you need to look up to see it. Cadillac XT5 is a bit natural.

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Because no matter how fast the camera and display respond, there is still a little deviation from the authenticity of the optical mirror. In the future, new technologies will improve this problem more and more, such as greatly increasing the number of playing frames. Just as photographers in the past could not accept the electronic viewfinder of a mirrorless camera in the early days, now this problem basically does not exist.

Interestingly, when I first started driving the Cadillac XT5, I was not used to it. After driving for a few days, I gradually feel that this is not a big problem. Searching Cadillac owners' forum, I found that the owners who have been in contact for a long time have basically adapted to the vision of streaming media rearview mirrors.

The streaming media rearview mirror has a wider viewing angle and is more suitable for vehicles with poor rear view.

When major brands promote their streaming media rearview mirrors, the first thing they mention is "having a larger viewing angle than traditional rearview mirrors". For example, Cadillac claims that the second-generation streaming rearview mirror has three times the traditional viewing angle.

Although the measured feeling is not necessarily as much as three times, it is indeed much larger than the visible range of ordinary mirrors. This advantage is especially beneficial when driving in narrow environments such as residential areas, parking lots and tunnels. On the busy highway, we can fully grasp the situation behind by scanning the streaming media rearview mirror.

I saw on the Internet that an old XT5 low-profile model was not equipped with a streaming rearview mirror, and the owner upgraded it to the original XT5 platinum version of the second generation product (that is, the model we tested). The reason is easy to understand: car owners often load large items in the trunk for work reasons, which will block the view of traditional rearview mirrors, and relying on the rear camera's streaming rearview mirror can solve this problem well.

In fact, BMW X6 and Geely Xingyue also have owners who like streaming rearview mirrors, but unfortunately they don't. Because the rear window of this coupe SUV is very small and the rear view is very poor, the streaming media rearview mirror can play a great role. So WEY? VV7, VV6 and other models have poor rear view, and are also equipped with streaming media rearview mirrors.

The advantages are most obvious at night and in places with low illumination such as tunnels.

For me, the view is not the biggest advantage of the streaming rearview mirror, because the inner rearview mirror is not as important as the side rearview mirror when driving. On the contrary, in the case of low illumination at night, the traditional mirror can do nothing (it has to endure the bullying of the high beam dog in the rear car), and the function of streaming media rearview mirror to improve the brightness of the environment is very useful.

Just like Huawei's mobile phone takes a night view, in the dark, when the line of sight is not good, you can also clearly see the road conditions behind you through the streamer rearview mirror. Especially in tunnels, clear images make people feel very safe.

In addition, the serial rearview mirror can handle most of the high beam, even if there is an SUV behind you with the high beam on, it will not be dazzling. Although the traditional mirror rearview mirror has anti-glare function, turning on the anti-glare function will make the already dark line of sight darker, which is very unfavorable to driving safety.

And relying on the camera's streaming rearview mirror, the advantage comes.

In both cases, the streamer rearview mirror is still powerless at night.

On a completely dark night, such as a highway without street lights, the streaming rearview mirror is as dark as the traditional rearview mirror, because the brightness is too low, which exceeds the photosensitive limit of the camera. Moreover, its anti-glare function is not very bright at this time, and the high beam at night will still affect the line of sight.

If the incident light at a special angle shines on the rear camera, it will glare like the camera lens and you can't see anything. For example, if you stop at a red light on the road, there is a powerful flashlight on the camera rack above the rear of the car.

What are the questions about the flow rearview mirror?

I remember two years ago, when I was driving the old XT5 in Chengdu, you would spray a jet of water on the rearview mirror and pass by the camera in case of heavy rain. So many people will worry that the effect of the camera will be greatly reduced after it is blocked by dust, rain and snow, but this problem has been solved.

First of all, the position of the camera of the streaming rearview mirror is not easy to be defiled, and then Cadillac XT5 takes this issue into account. The second generation streaming media rearview mirror has cleaning function. Pull back the wiper lever, it will spray water to clean the camera.

By the way, many parts brands have developed sensor and camera cleaning systems in the past two years. For example, Valeo proposed that "without the sensor cleaning system, there would be no automatic driving".

Valeo's everView sensor cleaning system is equipped with telescopic arm and multiple nozzles, which can automatically spray cleaning liquid and clean the sensor. Cleaning liquid can be sprayed evenly on the sensor surface with the extension of the arm, and the cleaning system can also be equipped with defrosting function to ensure the best performance of the vehicle in winter.

Friendly reminder, pay attention to the image behind the rearview mirror of streaming media.

Cadillac XT5 camera is installed above the license plate, and Land Rover Aurora integrates a wide-angle camera in the shark fin antenna on the roof, but in any case, a camera is shooting at the rear. So when you are in traffic jam or waiting for a red light, if you follow this kind of car, pay attention to keep your image.

The streaming media rearview mirror can not only clearly see the passengers in the front row of the rear car, but also have the function of brightening in low light, so it can be seen very clearly at night. So you should not only pay attention to your image at night, but also remind you not to get too close to the passengers next to you.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.