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Dual-camera mobile phone comparable to professional large aperture blur effect? Jul 16, 2018

Due to the size of the phone and the complexity of the components, it is obviously unrealistic to simply equip a larger area sensor and more complex optical modules to improve image quality. Since last year, mobile phone manufacturers have begun to adopt a dual camera solution to improve the quality of mobile phone imaging, or to achieve more gameplay. At present, dual-camera has become the standard of mobile phones. Up to the top flagship mobile phones are equipped with dual-cameras under the thousand-yuan machine, but they are also dual-camera, but different implementation schemes and different effects.

Different mobile phone manufacturers have adopted three different dual-camera implementations. The first is the combination of the main camera and the depth of field sub-camera. This solution can make up for the aperture size adjustment of the professional camera lens, and record the depth of field information through the sub-photograph. After the later processing, the background blur effect of the large aperture lens is obtained, which is quite useful for shooting macros and portraits.

The mobile phone with the main and double-camera design, in combination with the super-large aperture of the main camera, whether it is macro or portrait shooting mode, can match the background blur effect achieved by the professional camera large aperture, so that the excellent virtualized experience, It also makes this type of dual-camera camera phone become the representative product of the dual-camera phone.

The second is the combination of two different focal length lenses used on the iPhone. The iPhone 8 uses a dual 12-megapixel wide-angle and telephoto combination, which can achieve 2x optical zoom. Achieve portrait mode and macro shooting.

In addition to the dual-camera configuration of the main camera plus depth of field sub-camera, there are quite a few mobile phone manufacturers using a wide-angle main camera plus telephoto sub-camera configuration, which can capture more optical signals and greatly enhance the mobile phone in low light conditions. The performance is purer and less noisy; the telephoto lens is usually IMX350, and the combination of the two can bring 3x optical zoom. Coupled with the unique closed-loop motor of the mobile phone manufacturer and the multi-frame synthetic noise reduction technology from ArcSoft, the camera performance is quite outstanding.

The last one is the combination of color + black-and-white camera. Since the black-and-white camera cancels the dichroic filter, it has a higher amount of light and the image is clearer. This solution can also achieve lossless zoom and background blur.

The Leica dual-camera system used in this type of mobile phone can display a richer picture color, and the background blur effect is also quite excellent.


The three dual-camera implementations, although very different in the way they are implemented, can ultimately solve the effects of background blur, lossless zoom, etc. that cannot be achieved with a single-camera smartphone equipped with a fixed lens, and provide more playability.