K20pro photography skills

At the beginning of this year, the red rice mobile phone was upgraded from a product sequence of Xiaomi mobile phone to an independent brand Redmi. Products from low to high self-contained, continue to emphasize cost-effective, mainly online channels.

At the same time, vivo launched iQOO and other "hard-core" brands, OPPO introduced Realme from overseas to China, and big manufacturers entered the Internet mobile phone one after another, becoming new cost-effective players in the market.

It can be said that this year's "cost-effective" competition is more intense than before, which stimulates traditional players like Redmi to be more focused and create better products, especially flagship products. So, today we saw Redmi K20 Pro, a non-Redmi flagship product.

Redmi, born out of Xiaomi, naturally knows the way of "cost performance". Parameters such as Snapdragon 855, Sony 48 million and 4000mAh batteries are essential on K20 Pro, but besides the cost performance, Redmi K20 Pro also gives a new answer-to be a comprehensive true flagship.

Pop-up camera

Changing the relatively rough design of Redmi series, the design of Redmi K20 Pro is extremely exquisite, and many design elements that Redmi products have never seen before have been tried, especially this screen. Redmi K20 Pro presents the most complete screen, which can be called "the ultimate full screen", without the obstruction of water drops and the flaw of punching holes. Behind this design, it is supported by a higher-cost lifting structure.

The front camera module of the Redmi K20 Pro is located at the upper left, which accommodates a 20-megapixel camera, driven by a stepping motor, and can be raised within 0.8 second if necessary. Interestingly, a transparent light band is added on both sides of this module, which can emit red light effect with the rise, making the camera module more ceremonial during the lifting process.

It is also by using the transparent light strip of the lifting module as the light source that Redmi K20 Pro skillfully opens an annular light strip at the top of the module, which plays the role of breathing light. Everyday is very hidden. When there is a daily news reminder or when the power is plugged in, the light strip will flash with a striking red light reminder.

In addition, Redmi also designed six kinds of lifting sound effects, including xylophone, magic, hatch, eagle eye, mecha, gear and so on. You can choose according to your preference. Of course, the lights and sound effects can be turned off.

In terms of reliability, the lift camera of Redmi K20 Pro has a life of up to 300,000 times, and the lens surface is covered with sapphire glass cover, which is more scratch-resistant and wear-resistant, and protects the lens well. In terms of fall protection, Redmi K20 Pro has a dual protection mechanism. On the one hand, the sensor detects in time, and the drive module retracts actively. On the other hand, it also has built-in spring physical protection, which provides buffer margin to better protect the front camera and lifting structure.

Unfortunately, at present, this front camera does not support face recognition and can only be unlocked by screen fingerprints.

Polar full screen

Focusing on this "polar full screen", just like his name, RedMik K20Pro has greatly reduced four borders, especially the bottom border. By introducing COF soft package technology, the frame of the screen module itself is reduced, and with smart antenna switching technology, the clearance area is further reduced, killing the "big chin" that was criticized before.

According to official data, the bottom frame width of Redmi K20 Pro is only 3.8mm, and the top frame and left and right margins are also reduced to 2. 1mm and 1.85mm, which is the performance of the first echelon at present. You used to find it hard to believe the performance of a red rice phone.

In terms of parameters, Redmi K20 Pro adopts Samsung AMOLED screen, with a resolution of 6.39 inches, 2340× 1080 and an NTSC color gamut of 103.8%. The maximum brightness can soar to 600nit, which is equivalent to the AMOLED screen widely used in domestic mobile phones in recent years.

For this screen, Redmi is familiar with the tuning, consistent with Xiaomi 9, and optimizes the display effect under strong light and weak light, including sunshine screen 2.0, smooth transition of high light mode, low brightness color gamut compensation and gray optimization. At the same time, it also retained the eye protection mode and passed the VDE low blue light eye protection certification of the German Institute of Electrical Engineers.

With the development of the times, Redmi K20 Pro supports hardware-level DC dimming, that is, the algorithm independently developed by Xiaomi is directly integrated into the screen driver chip, which ensures the integrity of the data transmitted to the OLED panel at the bottom of the system, so that the gray and color bits are not lost, avoiding the problem that the "DC-like dimming scheme" reduces the gray resolution and color resolution of the screen due to mask +dither dimming, and bringing more natural visual effects in low light.

In addition to the display effect, this screen is also equipped with a seventh-generation screen fingerprint. Compared with the previous generation products, this is a collaborative upgrade of software and hardware. First of all, on the hardware level, the latest optical fingerprint scheme of Ding Hui is adopted, and the single pixel area of the lens module reaches 7.2μm, which is 100% higher than that of the sixth generation screen fingerprint.

Secondly, the algorithm upgrade, including suspension detection and MIUI preloading, is equivalent to predicting the unlocking behavior of mobile phones, loading resources in advance and improving efficiency. In addition, in the process of identification, DSP is used to accelerate the fingerprint data comparison in parallel, which reduces the identification time.

In the actual experience, the screen fingerprint experience of Redmi K20 Pro is very close to the mainstream capacitive fingerprint recognition, and it will trigger almost at the same time when the finger touches the screen, and the unlocking has been completed without obvious pressing steps, and the experience is no different from that of a higher-order flagship.

Flame pattern lighting effect

Four-curved 3D glass back shell+aluminum alloy middle frame, which is the standard of flagship design. The breakthrough of Redmi K20 Pro lies in color matching.

Redmi K20 Pro offers three colors, namely Flame Red, Glacier Blue and Carbon Fiber Black. Among them, Flame Red and Glacier Blue adopted the same technology, and after multi-layer coating treatment, 600 million nano-gratings were carved inside, which echoed the colors diffused inside and outside, forming a very rich light and shadow effect. When the light travels with the curved surface, the light and shadow on both sides of the fuselage dance like flames, as if they had spirituality.

Carbon fiber black is a bit low-key, similar to the texture presented by One Plus and Lenovo. Redmi also restored the carbon fiber texture on the glass material, but the difference is that Redmi K20 Pro also incorporated the "marc newson pattern" into it, adding a layer of design charm with the red touch of "angel eye".

In other aspects, Redmi K20 Pro adopts USB Type-C interface, with 3.5mm headphone jack reserved at the top and dual nano SIM card slots at the bottom.

Generally speaking, the mobile phone with mechanical lifting structure will be heavier, but according to the paper data of Redmi K20 Pro, the thickness of 8.8mm and the weight of 19 1g are well controlled. Under the smooth transition of the curved back cover, the grip of the Redmi K20 Pro is still good.

48 million super wide-angle AI three shots

Taking pictures is a highlight of Redmi K20 Pro, and a three-shot imaging scheme of wide-angle main shot+telephoto auxiliary shot+ultra-wide-angle auxiliary shot is adopted.

Among them, the parameters of the wide-angle main camera are not discounted at all. Sony IMX586 sensor, 1/2 inch bottom, 4800 Wan Chao high pixel output, single pixel 0.8 μ m, relying on Quad Bayer array design, "four pixels in one" in dark light to improve the photosensitive ability, the unit pixel can be increased to 1.6 μ m, and the high-quality image of12 million pixels can be output. In addition, it also supports 48-megapixel high-definition photos through hardware Remosaic pixel rearrangement, providing higher resolution in scenes with sufficient light.

As for the other two sub-lenses, the telephoto sub-lens outputs 8 million pixels, f/2.4 aperture and 5P lens, which are used for zooming and portrait shooting; The super wide-angle sub-camera has13 million pixels output, f/2.4 aperture and 5P lens, and supports 124.8 degree super wide-angle shooting. In addition, Redmi K20 Pro also introduced a laser focusing system, which made up for the traditional phase of Jiaozuo.

Let's take a look at the actual imaging performance of Redmi K20 Pro through proofs.

Redmi K20 Pro will output12 megapixel photos by default. According to the proofs, Redmi K20 Pro is vivid in color, and retains as many details as possible, so it has good endurance in complex lighting environment.

In low light, thanks to the high sensitivity of "four pixels in one", Redmi K20 Pro can take photos with sufficient brightness and rich details, and the first impression of the night scene is comfortable and refreshing. However, on a larger scale, it is still somewhat discredited, and there is still room for later optimization.

In super wide-angle shooting, Redmi K20 Pro can show a relatively wide scene in a narrow space, which is suitable for shooting large scenes such as scenery and architecture. AI will also intelligently detect the shooting scene and remind users to turn on wide-angle shooting.

On the whole, the multi-lens combination of Redmi K20 Pro can not cover the scene that other models with the same price can't. At the same time, in terms of imaging quality, Redmi K20 Pro has an absolute advantage of stability and 2500 yuan.

Snapdragon 855+8 Layer Graphite Stereo Cooling System

In terms of hardware configuration, Redmi K20 Pro is equipped with Snapdragon 855 mobile platform without any suspense. As the strongest flagship SoC at present, Snapdragon 855 is built by 7nm process, with Kryo 485 customized kernel and 1+3+4 core design. With Adreno 640 GPU and Hexgon DSP, the AI performance is three times higher than that of Snapdragon 845. In terms of baseband, Snapdragon 855 adopts X24 LTE modem, which supports LTE Cat20 at the highest. Generally speaking, Qualcomm Snapdragon 855 has reached the highest level of the current mobile platform in all aspects.

In order to give full play to the strength of this SoC, Redmi K20 Pro has also been upgraded to an 8-layer graphite three-dimensional cooling system. This is a double-sided heat dissipation structure. On the one hand, the heat is conducted to the screen through a customized 8-layer graphite homogenizer, and on the other hand, the heat is conducted to the back shell through graphite carbon steel for cooling.

In this system, graphite is the core material for heat dissipation, which is provided by Apple supplier Zhonghua Japan. Compared with a single layer, the heat dissipation capacity of the 8-layer graphite homogenizer adopted by Redmi K20 Pro is improved by 650%, so that the heat generated by the motherboard can be quickly dissipated to the external space by the processor, which reduces the temperature rise caused by heat accumulation and ensures better continuous performance output under high load.

In the games of Peace Elite and the glory of the king with the highest quality, the average frame rate of the red Mike20 Pro is close to the full frame in about 15 minutes, and the highest temperature of the fuselage is 4 1.8 degrees Celsius, concentrated in the upper right corner. The impact on horizontal screen games is limited, and the overall performance is satisfactory.

In terms of charging, Redmi K20 Pro has a built-in 4000mAh battery, which supports the charging turbo flash charging scheme and realizes wired fast charging power up to 27W. When the remaining power is 0, we have also tested the Charge Turbo flash charging of Redmi K20 Pro, and the results are as follows.

Redmi K20 Pro has obvious speed advantage in the first half. It can complete 56% power supply in half an hour, and it takes about 77 minutes to fully charge, which is considerable. Considering its battery capacity of 4000mAh, if users can quickly charge the battery in a piecemeal time, there is basically no need to worry about battery life.

The only regret is that Redmi K20 Pro still comes standard with Xiaomi's ancestral 18W fast charging head. To experience 27W fast charging, you must buy another charging head.

MIUI 10+ full-featured NFC

Redmi K20 Pro is pre-installed with MIUI 10 system and a brand-new Game Turbo 2.0 game acceleration scheme, which not only enhances the intelligent prediction of SoC resource scheduling, but also comprehensively optimizes the touch mechanism at the bottom of BSP to improve the chirality and click response of manipulation. Some bugs are that Game Turbo 2.0 adds a "night vision device" function, which intelligently optimizes the contrast of the dark part of the screen and makes it easier to find the enemy situation in the dark part.

At the same time, Redmi K20 Pro is also the first Redmi model to support NFC. NXP's next-generation NFC chip SN 100T is adopted, which is the same as the iPhone XS series. Fully support card reading, card writing and card simulation functions. Its related functions with MIUI are open, and the daily mobile phone bus card, bus card recharge, UnionPay China UnionPay Express and door card simulation are not a problem at all. It is the most widely used NFC at present.

The audio system of Redmi K20 Pro has also been significantly improved, with a WCD9340 independent audio decoding chip built in and passed the Hi-Res certification. In terms of external sound, Redmi K20 Pro adopts 12 17 superlinear unit speaker and 10V ultra-high voltage intelligent PA, and cooperates with 0.9cc large sound cavity to realize external sound with larger volume.

In addition, Redmi K20 Pro supports dual-frequency GPS.

Summary: flagship product strength, cost-effective benchmark

There are four versions of Redmi K20 Pro, and the price of 6GB+64GB version is 2499 yuan. 6GB+ 128GB version costs 2599 yuan; 8GB+ 128GB version is priced at 2799 yuan; The price of 8GB+256GB is 2999 yuan, which is the cheapest Snapdragon 855 model at present.

From the product point of view, as the first flagship of Redmi brand, Redmi K20 Pro has delivered a sincere answer sheet: the ultimate comprehensive screen design, light and shadow texture body, and the flagship Snapdragon 855 and 48 megapixel super wide-angle AI three shots, which have surpassed other products at the same price. At the same time, Redmi K20 Pro also introduced Xiaomi's perfect NFC service for the first time, upgraded the brand-new audio system, supported faster 27W flash charging, and the product strength was completely in line with the flagship.

It can be said that Redmi K20 Pro is not only the benchmark of cost performance, but also a comprehensive and balanced flagship product. For purchase, I suggest that you bypass the 6GB+64GB version and buy the 128GB version directly, which is more useful. After all, it's only 100 yuan.