What's the use of a dual camera phone?

Abstract: dual-camera smart phone, this is really not a new word. Nowadays, many domestic mobile phones have released dual-camera smartphones, pushing the technical term of dual-camera to the forefront. What's the use of a dual camera phone? Is the shooting quality of dual cameras necessarily better than that of single camera? Why is the picture quality of dual cameras better? What other brands are there besides dual-camera smart phone products now? Let's have a look. What's the use of a dual camera phone? What are the dual-camera phones?

What's the use of a dual camera phone?

The sensor size and lens quality directly determine the imaging quality of the camera. In smart phones, due to the limitation of size and thickness, it is impossible to infinitely improve the sensor size and lens optical quality. In this case, it is a natural choice to improve the imaging quality by adding a second camera. As for how to use this "redundant" camera, mobile phone manufacturers have experienced many years of exploration and attempts.

As early as 20 1 1, HTC launched the first dual-camera mobile phone EVO3D(G 17), whose function is to shoot 3D images. Three years later, HTC introduced the OneM8, also equipped with dual cameras. The function of the "auxiliary" camera is to record the depth of field data, so as to realize the function of "taking pictures first and then focusing". In addition to HTC, Huawei, Qiku and other domestic brands have also launched dual-camera mobile phones, mainly to improve the imaging quality at night. The latest mobile phone equipped with dual cameras is LGG5. Its two cameras have different angles of view, which can satisfy more shooting scenes.

Corephotonics is a company from Israel. The dual camera module designed by them can not only improve the imaging effect at night, but also add optical zoom function to the mobile phone without using bulky zoom lens.

The following content is compiled from CNET, and the original title is the future of smart phones.

With a mature smart phone, what other reasons can attract you to change your phone?

A bigger screen with higher resolution? Or a faster processor? Forget it, dual cameras may be the next technology that can attract you to change planes or even change industries.

Dual cameras capable of "optical zoom"

As early as 20 14 MWC, Corephotonics from Israel demonstrated a special dual camera technology. Compared with the prior art, Corephotonics technology can not only improve the imaging quality of the camera in low light, but also add optical zoom function to the mobile phone without using the mobile lens group.

Working principle of dual cameras

This is not the first time that dual cameras have been used on smart phones. In the wave of "3D Everything" that was popular for a while a few years ago, HTC launched the Evo3D with dual cameras, which can take 3D photos and look back directly on its 3D screen. Due to its limited practicability, this technology has not entered the mainstream market.

The dual camera solution provided by Corephotonic is completely different from HTCEVO3D.

At present, Corephotonic provides three kinds of dual-camera modules, among which the most basic version has a telephoto fixed-focus lens and an ordinary wide-angle lens. The former has a narrow field of vision, while the latter has a wide field of vision. Corephotonic can stitch these two photos together through a unique algorithm, thus "simulating" the optical zoom effect of the camera. In addition, Corephotonic also said that this camera (called "computing camera" by Corephotonic) has higher resolution, better noise control, better dynamic range and more accurate depth of field data.

Dual cameras can solve the real "pain point"

Smartphones are getting more and more boring. They all have similar configurations, similar cameras and storage space, but differ in "small" functions such as appearance design, waterproof or fingerprint recognition. Smartphones need some "new things" to attract our attention again.

How many times have you wished you were closer to the subject when taking pictures with your mobile phone? How many people are crazy about the poor quality of night imaging? Different from the dual-camera function of "teasing you" in the past, if all goes well, Corephotonics can really solve several "pain points" when we use mobile phones. In addition, this technology may also accelerate the decline of non-professional portable cameras.

The third generation of dual camera may appear soon.

The main advantages of dual cameras are clearer photos and greater depth of field. Secondly, dual cameras have better performance than single cameras in low light environment. Dual cameras can analyze which pixels restore the scene to a higher degree, which can help the mobile phone effectively suppress noise, thus making the picture have better picture quality restoration. So although dual cameras will perform better in all aspects, it is more important to handle the algorithm of dual cameras. If P9 can reach the standard in algorithm, it can almost be concluded that it will be at least one generation ahead in taking pictures.

Machine photography is more like professional photography.

An excellent professional photographer can shoot excellent works with smart phones, but even the best people will still feel the creative limitations brought by mobile phone cameras in some scenes.

By adding a second camera, not only can the quality of photos taken by the first camera be improved, but also different shooting angles or more depth of field options can be provided, which means that mobile phone manufacturers have more differentiated space in taking photos.

Of course, for those photographers whose technology is improving, dual cameras will bring more creative space.

What are the dual camera phones?

Huawei

Recommended model: Huawei P9

Main camera specification:120,000 pixels

distinguished

Recommended model: Glory V8

Main camera specification:120,000 pixels

recover

Recommended model: ZTE AXON mobile phone

Main camera specification:13 million pixels

Often referred to as HTC or HTC.

Recommended model: OneM9+

Main camera specifications: 20 million pixels

Coolpad

Recommended model: Cool platon

Main camera specification:13 million pixels