Six months after the launch of Xiaomi MIX 2, Xiaomi MIX 2S Appear with the slogan of "one side technology, one side art". The ceramic back cover is retained, but there is no all ceramic version Xiaomi MIX 2S , focused on upgrading the SoC and the main camera, and won the same DxOMark photo points as the iPhone X. Xiaomi finally polished the MIX series into a bucket flagship without big short board.
Summarize before
According to the convention, we can draw a direct conclusion: although the current MIX series can no longer find a particularly amazing place, Xiaomi MIX 2S It is Xiaomi's most balanced flagship so far, and it is a veritable bucket machine. At the time node, except Huawei, the MIX 2S has no domestic rivals of the same generation. Huawei P20 Pro has strong photography, but its performance has big shortcomings
Very little appearance change The width of the border and forehead is better controlled, but it is thicker. The vertical double camera has plastic washers on the edge of the screen, and the feel is slightly improved;
Excellent screen color accuracy The three modes are very close to the 6500K standard color temperature, and the screen's primary color has changed from red to yellow, as well as the JDI screen's signature twill, which is of good quality, and it is rare to buy LCD screens;
There is no big change in the endurance and charging speed There is no short board but it is not amazing. The main reason is that 7.5W wireless fast charging is added;
Core upgrade:
The performance has been significantly improved. Even though the Snapdragon 835 is enough now Snapdragon 845 still shows that it can directly sense the speed increase , and the same game can achieve lower power consumption and heat.
Night photography is advancing rapidly, However, the more frequently used daytime and light scenes have not been improved much, and there are many small problems to be improved, such as inaccurate white balance and light measurement, the processing level and trigger control of HDR algorithm, and the inability to automatically switch sub shots according to light intensity.
Popular Q&A
What is the difference between the appearance and Xiaomi MIX 2?
It makes no difference, There is no substantial change in appearance and feel. It is narrower and shorter than the previous generation of the non full ceramic version, but thicker. The screen has more plastic gaskets. The back ceramic cover extends to the middle frame, bringing better anti shattering screen capability and feel. But the core is that the MIX 2 is still more beautiful.
Is there a big improvement in performance and photography? Is it worth the difference of 400?
The promotion is very big, and the suffix "S" in the name is completely worthy. There is no need to buy MIX 2 again. You can get a camera and SoC for 400 yuan, which is a big profit. Users who have just bought MIX 2 feel like they have been in the national army for 49 years.
appearance
The iconic "three sided frameless+chin design+ceramic back cover" of MIX series has four details:
3D control is better than the non full ceramic version of MIX 2, but not as good as the full ceramic version of MIX 2. It becomes shorter, narrower (that is, the frame is narrower), but thicker (a wireless charging coil is inserted inside), but the amplitude is very slight;
A ring of plastic washer is added to the front glass (this is the design commonly used by Blue Green Factory), which improves the anti shattering ability of the screen, but slightly affects the feel;
The metal middle frame becomes narrower, and the curvature of the ceramic back cover becomes larger and deeper. The handle is slightly good
Change to a single microphone opening, and then, there is no later.
screen
The screen parameter MIX 2 of Xiaomi MIX 2S is consistent, 5.99 inch 18:9 full screen, 2160x1080, JDI model nt35596s Video Mode LCD screen, even a close look of the twill grid is the same. However, there are changes in training, Compared with the reddish primary color of MIX 2, the primary color of Xiaomi MIX 2S screen is yellow.
In objective data, the highest brightness of multiple modes is about 490 nits, with little change. Compared with MIX 2, the main change of Xiaomi MIX 2S is the improvement of software tuning. The middle color is accurate, especially for "screen scoring" Standard mode color accuracy has been greatly improved The average deltaE can be reduced to 2, and the maximum is only 4.9. The color temperatures of the three modes are all concentrated towards the standard color temperature of 6500K, which confirms the visual impression of yellow and warm.
By contrast, the best sRGB color standard in the database is 1.6 for iPhone 7, 1.8 for Note5, 2.6 for S6 edge+, and 2.9 for S7 edge, all of which are old flagship. The recent S9+also has 3.9, Note 8 also has 3.6, and the industry's color accuracy performance is falling back slightly
Although the Xiaomi MIX 2S screen has small viewing angle, JDI twill, and yellow default, it is rare to buy it LCD screen, no strobe problem On the contrary, it may attract some users of the "Anti AMOLED Alliance".
system
The bottom layer of Xiaomi's MIX 2S system has been upgraded to Android 8.0, but interestingly, the Hongmi Note 5 is Android 8.1... While MIUI 9 and Snapdragon 845 have improved daily use significantly, but there has been no change in functionality.
Endurance&Charging&Heating
The Xiaomi MIX 2S is still a 3400mAh battery. After 30 minutes of large-scale games (NBA 2K15), 30 minutes of wifi and 4G Internet access and 30 minutes of local video playback, after a total of 2 hours of endurance testing, the remaining power is 79%, slightly better than the Xiaomi MIX 2, but still inferior to the Xiaomi 6 with a small screen.
The QC 3.0 fast charge of Xiaomi MIX 2S has a power of about 16.7W for off screen and 17.5W for on screen.
The charging speed of Xiaomi MIX 2S belongs to the normal level of Qualcomm QC fast charging camp, and it will not become a bottleneck, but it will not be amazing. The actual charging time is 5% - 100%. The charging time is 15 minutes to 25%, 30 minutes to 45%, and 1 hour to 86%. It takes 1 hour and 35 minutes to fully charge, which is about 6 minutes faster than the Xiaomi MIX 2 in the database, but slower than the Xiaomi 6 of the 3350 mAh battery. It is slower than OPPO, Nubia and other low-voltage fast charging technology models, as well as Meizu flagship with mCharge.
With the Xiaomi wireless charger, the Xiaomi MIX 2S can be "high voltage wireless fast charging" with a power of 8.76W (wireless charging will cause losses, and the actual output value will be lower than this). IPhone X and Galaxy S8+are 7.2W and 5.9W, respectively, faster than expected. However, Xiaomi wireless charger is not a random accessory, Shenghui 99 yuan.
performance
Xiaomi MIX 2S is the first domestic Snapdragon 845. This year, the situation is the same as that of Xiaomi 6 last year. Xiaomi has monopolized the domestic Snapdragon 845 for several consecutive months. At present, except for the Samsung Galaxy S9/S9+, Sony and Black Shark mobile phones (which belong to Xiaomi family) of the National Bank of China, no domestic manufacturers use them temporarily, and even the Red Devil game mobile phone in Nubia does not use Snapdragon 845.
Snapdragon 845 adopts Samsung 10nm LPP process, and its power consumption control is better than the previous generation 10nm LPE. The big and small cores are based on the A75 and A55 semi autonomous architectures. They are respectively the "Gold and Silver" Kryo 385. The frequency of the big core is up to 2803MHz, and the small core is 1766MHz. The core codes are 0x802 and 0x803. The GPU is Adreno 630, and the driver version is V283, the same as Qualcomm's Snapdragon 845 test machine, which is higher than the V269 of Xiaomi MIX2 (Android 8.0) and the V258 of Pixel 2 series (Android 8.1). The GPU frequency is 710MHz, the same as that of Snapdragon 835.
Because this year's Kirin 970 CPU performance has stagnated, while Samsung Exynos 9810 has many problems with power consumption, core and frequency regulation due to M3 core. Snapdragon 845 is one of Qualcomm's flagship SoCs that has left most competitors in recent years.
We use the Samsung S9+of Snapdragon 845 and Exynos 9810, Huawei P20 Pro (Kirin 970) and Xiaomi MIX 2 of Snapdragon 835 for comparison.
CPU computing performance
Xiaomi MIX 2S has a small lead in single core performance, and its multi-core score is significantly higher than that of the 845 Samsung S9+, or even Qualcomm's Snapdragon 845 engineering machine. It is close to Exynos 9810, and the CPU tuning is still very active.
It should be noted that the Exynos 9810 is a single core 2.7GHz, and the eight cores are fully open at 1.8GHz at the same frequency. As a result, the history of Android has been recorded in the single core test. However, the probability of running a single core in daily use is extremely low, and this result has no practical value. The frequency of 8-core full open is too low, which finally leads to a big lag in multi-core tests such as RAR and Pi of Exynos 9810, and it is also directly reflected in the smoothness of use. However, its GeekBench score can still be ranked first on Android, which is a very serious suspicion of score optimization.
Memory performance
In terms of memory performance, the Xiaomi MIX 2S is still better than the Bank of China version S9+and Qualcomm engineering machine, but the memory latency of the 845 is significantly higher.
GPU graphics performance
In GFXBench, the GPU tuning of the Xiaomi MIX 2S is not as active as the CPU. It is the weakest of the three Snapdragon 845, but the reference is relatively weak. In the 3DMark, which is nicknamed "Qualcomm Mark", the Xiaomi MIX 2S is leading. However, according to the actual game situation, the smoothness of Xiaomi MIX 2S in the chicken eating series games is not as good as S9+, which is still the reference value of GFXBench's test results.
Flash memory read/write performance
The continuous read and write performance of the Xiaomi MIX 2S even slightly lost the performance of the MIX 2. The random read performance has slightly increased, and the random write performance is even higher than that of the Huawei P20 Pro.
In daily use, within 1-2 seconds after the Xiaomi MIX 2S application is opened, the maximum big core can only reach 2.65G. Only in high load applications can the limit of 2.8G of four big cores break out. This is just the opposite of the previous strategy of Snapdragon 835. It is really A75 (Kryo 385 is a semi autonomous architecture based on A75)+10nm LPP. If the frequency control mode of Snapdragon 835 was followed before, the application could burst at the highest frequency when it was opened, and its application opening speed could be improved a bit.
In terms of frequency stability, even 10nm LPP cannot be pressed at the highest frequency of 2.8G, and the highest frequency load heats up quickly, but the frequency stability is acceptable. In the MIX 2 test (the most high-pressure test item) of Xiaomi MIX 2S at 26 ℃, eight core full open baking GPUFLOPS, the highest frequency lasted about 40 seconds, and there was a short time fluctuation (the big core jumped to 2.3G in a short time). After two and a half minutes, it could not hold. Although most of the time was at the highest frequency, the proportion of time jumping between 1.7+2.3 and 0.5+2.3 increased, This situation hasn't changed much after 6 minutes.
In general, Xiaomi MIX 2S The performance improvement is still considerable. The CPU performs well, and GPU tuning is not as good as S9+. Reflected in daily use, the startup speed of each small application is a little faster than that of Xiaomi MIX 2, but there is no difference in the loading speed of large games (after all, the bottleneck in this situation is flash memory, not CPU). But it does exist in large games such as chicken eating. The frame number is not as high and stable as S9+of Snapdragon 845. The application startup speed comparison can be viewed Love to play computer games Previous speed comparison content "New and Old Snapdragons vs Xiaomi MIX 2S - Speed Comparison Test of Xiaomi MIX 2" 。
photograph
The early generation Xiaomi MIX was a "mass production concept machine". The camera made a choice for thickness control, using an OV16880 sensor, 16 million pixels, 1/3.06 inch, 1 μ m unit pixel, F2.0 aperture and no optical anti shake. The book parameters of this CMOS chip are consistent with that of Samsung's first S5K3P3 with 1 μ m unit pixel (the one on Hongmi Note3 All Netcom), which leads to the fact that the actual imaging level of the original MIX is very close to that of many thousand yuan computers.
At Xiaomi MIX 2, Xiaomi has used Sony IMX38612.2 million pixels, 1/2.9 inch, 1.25 μ m, which is still F2.0 aperture, but it has four axis optical anti shake, and the parameters are already at the standard of normal flagship computers. At the beginning of this year, after Xiaomi updated its firmware, it significantly improved the ISO and exposure of weak light.
The rear of the Xiaomi MIX 2S is the Sony IMX363+with optical anti shake, the Samsung S5K3M3 (dual 12 megapixels) without optical anti shake, and the front OV5675 (5 megapixels). There is no change in the front. Compared with MIX 2, the main camera has been upgraded and the same sub camera sensor as Xiaomi 6 has been used. However, the main aperture has increased to F1.8, and the secondary aperture has also increased from F2.6 of Xiaomi 6 to F2.4.
Xiaomi MIX 2S is the first IMX363 (with optical anti shake) in China, maintaining 1.4 μ m unit pixels, 1/2.55 inch, 12.2 million pixels, F1.8 aperture and optical anti shake consistent with IMX362. Although the PPT of the IMX363 sensor was launched for the first time and was robbed by Asus ZenFone 5, the Xiaomi MIX 2S is the first IMX363 model that most of our domestic users contact.
From the first IMX260/S5K2L1 (Samsung S7 series) with full pixel dual core focusing, to the later IMX345/333, S5K2L2 (Samsung flagship), to the very familiar IMX362/S5K2L7 (Pixel series changed from 1.55 μ m IMX378 to 362). This series of programs is the most widely used flagship photography hardware after IMX214 and IMX298.
The conclusion is that Xiaomi MIX 2S is the strongest camera phone in all generations of Xiaomi. Weak light crushes MIX 2. Extremely weak light can also beat iPhone X. Overall, there is still a gap between iPhone X and S9, but it must be Xiaomi is the best photographer and has become the top position of domestic photography. However, the daytime and lighting scenes cannot be separated from Xiaomi MIX 2, and there are many small details to be handled, such as white balance and unstable metering.
There are two interesting points here:
The sub camera of the Xiaomi MIX 2S is forced to turn on when zooming, so it will not switch to the main camera because the light becomes weak. The user needs to choose by himself, which is not very user-friendly.
There is a conflict between automatic HDR and night view mode. Some night views will automatically trigger HDR, but the effect of HDR is far less than that of night view mode.
The following is the analysis of small projects:
Photo experience: The shutter response of Xiaomi MIX 2S is much slower than that of Xiaomi, whose shutter is like a machine gun (when the light is good). The naming suffixes of HDR and night view samples are cancelled, which is not convenient for analysis, but has little impact on use. Finally, there is automatic HDR, and the trigger rate is good. HDR and night scene can be completed in the background, without causing the frame to get stuck. It is completely OK;
Focusing and film forming: focusing is fast and accurate, which is much better than the Xiaomi MIX 2 with the bellows pulled down by weak light. The main safety shutter is 1/13 second, which is faster than MIX 2 (1/12 second). The sub camera safety shutter is 1/33 second, but after all, there is no optical anti shake, and the low light film rate is average;
White balance and metering: The metering of Xiaomi MIX 2S is not stable enough, Many scenes are dark The weak light scene is fully exposed and close to the naked eye. The white balance and the ancestral green millet MIX 2 are totally different styles, but there are still many problems to be solved. The white balance base There is obvious tendency of redness and yellowness , facing the blue sky, the car occasionally rolls over, and the white balance of the main and deputy photographers sometimes falls far behind;
Tolerance: the background tolerance of the sensor is OK, but the HDR force is very light In addition, the light measurement is more likely to be dark, which makes the dark details a little difficult. The contrast in extremely weak light also decreases significantly, which is close to the level of iPhone X, and is still far from the poor light contrast of the abnormal level of S9+;
Discrimination: In daytime and most lighting scenes, the analytical power cannot be separated from MIX 2, which is a bit unexpected. The main advantages are reflected in the weak light and extremely weak light scenes, In addition to crushing MIX 2, some scenes have been slightly better than iPhone X, completely overturning our impression of Xiaomi's weak light imaging ， DxOMark's score is really not for nothing. It should be noted that the automatic HDR cannot be turned on under the weak light of MIX 2S, and once triggered, there will be side effects;
Noise control, color saturation: The noise reduction smear is lighter than MIX 2, the noise reduction performance is slightly better than that of iPhone X (except for extremely weak light scenes), and the color saturation is slightly higher than that seen by the naked eye, but compared with the competitors who run in the same direction, it seems more "elegant".
PS： All the samples below are in the center of focus. You can click the picture to view the large picture on the official website of Iooko PC version.
The samples are arranged according to five parts: "HDR and sub photography characteristics, daytime, light, weak light/extremely weak light, sub photography". Each part has 3-4 groups of samples, and the rest are at the end of the article.
HDR and sub camera characteristics
Default vs. HDR mode
Default vs. HDR mode
Comparison between automatic night view and HDR mode
Comparison of main and secondary lighting scenes
Comparison of main and secondary camera lighting scenes (the same scene ISO is about 10 times higher, and may not win the main camera)
Long focus sub camera, when zooming, the light will be forced to enable the long focus sub camera even if the light is weak:
The sub camera of the Xiaomi MIX 2S is very special. As long as the zoom is 2x, the sub camera is used even if the light is weak. The normal long focus sub camera does not work when the light is weak, and will use the main camera direct digital zoom output (the imaging effect of the sub camera is not as good as the main camera direct cropping under weak light). This may be because the Xiaomi algorithm has not been done well, and the ability to automatically switch the main camera and sub camera according to the light is not available, or it may be that the control right is reserved for the user.
As a result, The user has to remember not to use the zoom when the light is weak (If the light is weaker than the office light, don't use it. It's probably not as good as the main camera.) On the contrary, it's a bit inconvenient to use it.
Daytime scene
Daytime scene
Zoom in at the center of the scene during the day
Daytime scene
Zoom in at the center of the scene during the day
Day Scene 3
Light scene
Light Scene 1
Light Scene 1 Center Enlarged
Light Scene 2
Light Scene 2 Center Enlarged
Weak light/extremely weak light scene
Weak light scene 1
Weak light scene 1 central amplification
Weak light scene 2
Weak light scene 2 central amplification
Weak light scene 3
Weak light scene 3 central amplification
Extremely weak light scene 4
Extremely weak light scene 4 is magnified in the center (I believe many people have never thought that this is the performance of Xiaomi MIX 2S)
Subphoto contrast
Paraphotomization
Subphoto contrast 1
Sub camera contrast 1 central amplification
Subphoto contrast 2
Subimage contrast 2 central amplification
Light/Dim Scene
Light/Dim Scene
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