Comparable to SLR? Independent White Balance Analysis of Nubian Z7 Max

IT 168 commented that Nubian Z7 series mobile phones once sold well after listing, and the Nubian Z7 Max and Z7 mini currently on sale were snapped up every time they were pre-sold, which is a new generation of domestic magic machines. The biggest highlight of Nubian series mobile phones is their high cost performance. Quan netcom? And then what? Professional camera? It also stands out among many smart phones and becomes another hot domestic machine.

"Appointment link:

Nubian Z7 series mobile phone reservation click through.

"Product link:

Nubian Z7max JD.COM1999 Yuan Click to enter.

"Product link:

Nubian Z7 Mini JD.COM1499 Yuan Click to enter.

In fact, Nubian Z7 series mobile phones not only support the full netcom of the native 4G/3G network of mobile/Unicom/telecom, but also make further optimization in taking photos, adding an independent white balance to the original independent focusing and metering base. With Nubian's latest NeoVision 4.0 camera software, the overall playability is further improved, even surpassing digital cameras in many functions.

We have introduced many ways to play Nubian smart cameras before, but the independent white balance brought by Nubian Z7 series still attracts our attention. As we all know, white balance accounts for a large proportion in the optimization of cameras by major manufacturers at present. How to adjust the correct and true white balance is one of the difficult problems for each manufacturer. In addition to the automatic white balance technology, Nubian Z7 series mobile phones also introduce the manual white balance function, which provides a variety of white balance mode choices and can even adjust the color temperature, which is very powerful.

At present, the independent white balance technology of Nubian Z7 series has even surpassed many professional cameras. Users who have some experience in camera shooting can get a completely different experience from other smart phones. So what kind of white balance technology did Nubia bring? Let's take a look (at present, Nubian Z7 Max and Z7 mini have supported this technology, and other models will be realized by software upgrade in the future).

Before that, let's introduce the white balance technology in mobile phone photography. White balance is the restoration of white objects by the camera. People's eyes can correctly identify colors because people's brains can detect and correct color changes caused by environmental factors. The photosensitive element inside the camera can also detect the color temperature of light and adjust it internally, so as to correctly reproduce the color of the shooting scene, which is the automatic white balance mode of the camera.

Although automatic white balance can adapt to a variety of lighting environments, color cast still occurs under some special lighting conditions. In order to correct this color cast phenomenon, the camera will preset some modes to achieve colors that make the photos better present natural effects. In addition to some preset modes, Nubian camera also adds the functions of independent white balance and manual white balance, which can take different creative pictures according to your own ideas.

In addition to white balance, we also need to understand the concept of color temperature. In fact, each light source has its own color, which we call? Color temperature? ; It is different from red to blue, so it is divided into warm colors and cold colors. The light emitted by candles, sunsets and incandescent lamps is close to red. What is the hue of the light they present in the picture? Warm colors? ; Relatively speaking, the clear blue sky and green space will make the picture look? Cold tone? .

The white balance control mentioned above is actually to accurately restore white, but under different light sources, the picture will have different color tendencies, resulting in warmer or colder colors. For example, the light of candles will make the picture orange and warm the tone; The light after dusk will cover the scene with a cool blue tone, which will make the tone cool. Cold and warm colors have an extremely important influence on the expression of the artistic conception of the film. The adjustment here is controlled and changed by white balance.

▲ Nubian independent white balance application patent

With so much preparation, what are the highlights of Nubian's independence and white balance? Is it really comparable to a camera? Let's analyze it in detail.

Nubia has done a lot of optimization in independent white balance, mainly including preset mode, independent metering and automatic adjustment of color temperature. The default mode is that you can use the built-in mode to adjust the white balance; Independent metering is to manually adjust the light position and choose the best tone; Color temperature adjustment is to adjust the color temperature value and correct the color temperature of the picture.

Let's take a look at the preset white balance modes of Nubian cameras, including automatic white balance, incandescent light mode, daylight mode, fluorescent mode, cloudy mode, independent mode and manual mode (i.e. color temperature mode), and each mode will bring different imaging effects.

▲ Various white balance scene modes provided by Nubian smart camera in Pro mode.

Of course, the most important thing is, what is Nubian's white balance mode? What you see is what you get?

This is very different from traditional cameras.

Traditional cameras need to look at the proofs after you finish shooting to know the results.

And this must be one of the advantages of Nubian smartphones.

Through different white balance modes, images can present different color effects and express different artistic conception. For example, the white balance adjustment of the cloud part in the above picture can get different shooting effects. Of course, for ordinary users, you can choose automatic white balance, which can realize one-button photography.

Nubian Z7 series mobile phones not only provide multi-scene white balance options, but also have independent white balance. Simply put, you can manually adjust the position of the light and choose the best tone.

▲ The independent white balance mode provided by Nubian smart camera can be freely played according to your preferences.

For example, the Nubian Z7 Max in our hands can freely choose the tone you want to adjust in the scene by moving the blue diamond box, and then lock it, thus determining the tone color of the whole movie. Even in the later process of re-composition, focusing and photometry, the color tone will not change, which ensures the color tone of the film and has made great progress compared with the traditional camera.

Nubian Z7 series mobile phones not only support multiple scenes and independent white balance, but also support manual (color temperature) mode adjustment, which is rare in current smart phones and even only appears in high-standard cameras. Simply put, this function is to manually set the specific color temperature value of white balance to determine the desired color tone when taking pictures. Tones can be divided into cool tones and warm tones.

The unit of color temperature value is Kelvin, expressed in letters? k？ It means that the lower the k value, the warmer the color; The higher the k value, the colder the color.

We also tested this ourselves. Nubian Z7 Max has a minimum color temperature of 2500K and a maximum color temperature of 8000K K. It can be seen that when the color temperature value is set to 3000K, the picture effect is obviously warmer; When the color temperature value is 7500K, the picture effect is cooler, and you can take different photo effects according to your own preferences.

In addition, it should be noted that the color temperature value of sunlight is about 5200K, so the color tone of light can be truly restored at this color temperature value, and color restoration is normal, that is, the light environment on sunny days or cloudy days, so it is safer to take pictures with this value.

For beginners, you can choose 5200K as the benchmark parameter, and then make corresponding adjustments according to the timbre you want. Adjustment is very convenient, just move the slider left and right. Of course, the biggest convenience is that you can see the real-time effect through the mobile phone screen.

For Nubian Z7 Max, under normal circumstances, the camera's automatic white balance mode can provide quite accurate color temperature. However, in the indoor lighting environment, the camera will still appear color cast due to the influence of light, so the white balance adjustment at this time can effectively correct the color temperature.

For example, under the tungsten lamp light source, the color of the film is yellow, so adjust the white balance, and the adjusted picture will return to the normal and true color.

In particular, incandescent lamp itself has many colors, and the color temperature of different colors is high or low, so using incandescent lamp mode may not be able to accurately restore the true color of the subject, or in the corresponding mode, the effect is still not satisfactory, so it is necessary to use self-adjustment or selection of color temperature mode for correction to achieve the ideal effect.

In addition, for photographic creation, images are not absolute? Is it accurate? White balance, the photographer can even choose one? A mistake? White balance to get the atmosphere that photography wants to present. For example, when shooting dusk scenery, deliberately using incandescent white balance mode can make the image look like early morning. But when using this technique, the photographer should pay attention to whether there is a subject in the image, because the skin color of the face will become unnatural because of color cast.

The following example uses different white balances to shoot the night view of Victoria Harbour, from which we can see that different settings can show different atmospheres.

The shooting effect of daylight white balance mode is close to the normal shooting effect, but it is relatively warm.

Incandescent light and white balance mode shooting effect, you can see that the picture appears obvious blue.

The shooting effect of cloudy white balance mode, blue is suppressed to a certain extent, red and green are relatively prominent, showing yellow and red.

Restored the real color, the picture effect must be good? In fact, the function of white balance is not only to restore the true color, but also to let photographers use it deliberately? Color cast? Show off your creative shooting. For example, when shooting at dusk, it is often necessary to strengthen the warm golden light, which can be easily achieved by using white balance adjustment.

Using color temperature mode and automatic white balance shooting, the shadow part of the swan appears faint blue. Setting the color temperature value of 7000K can obviously enhance the warm color, make the water surface and swan appear rich golden yellow, better express the atmosphere of dusk, and be more pleasing to the eye visually.

However, we can also see from the photo proofs that although Nubia has an excellent independent white balance experience, there are still many gaps in imaging effect compared with the camera. However, judging from the current portable photos, Nubian Z7 series mobile phones are fully competent. Compared with other brands of mobile phones, it also has advantages in playability and fun, which can meet the needs of daily life.

As mentioned above, for users who like to take pictures, use white balance to achieve it? Strange? Our work is actually a very creative idea, which needs the adjustable white balance function. In this respect, Nubian Z7 series mobile phones have obvious advantages, and we share many beautiful white balance pictures taken by Nubian mobile phones.

At the end of the article, can Nubian Z7 series mobile phones that many users care about kill the camera? Similarly, we can also explain. From the function and experience point of view, Nubia has the function of independent white balance, plus independent metering, independent focusing, real-time filter and so on. And the experience can really kill the current ordinary camera.

Judging from the photo effect, the imaging of mobile phones can't be compared with professional cameras. Due to the hardware level of the industry, it is still impossible to kill the camera from the imaging effect, and there is still a gap from professional cameras. However, if you only take photos in daily life and pursue simplicity and convenience, Nubian Z7 series mobile phones can fully satisfy it, and the built-in rich camera functions can also bring more interesting experiences.