For several years now, the dual camera systems in smartphones have got a better review from the users. The earliest version of it was in case of HTC EVO 3D, which had a 3D camera. With the passage of time, dual camera systems have got evolved and the people are getting many options in it. But, why they are important for modern smartphones is a matter to be discussed.

The depth sensor is the basic thing that is added in dual camera system, and this sensor helps the second camera to act in 3D manner while accompanying the first one. Moreover, this sensor helps in formation of better image. Then there is monochrome camera, which is also regarded as a slightly better implementation as compared to the depth sensor. Similarly, the wide-angle camera is also another modification in terms of forming the better image.

So this can be said that different dual camera systems are important and each new option helps in better formation of image through two cameras installed on the back.