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  • RGB is not needed: why Huawei invented its photomatrix?


    Priyanka

    The evolution of photography has been long and thorny, from black-and-white daguerreotypes to digital snapshots on a smartphone. Now, according to the popular resource, DxOMark, the best camera is the Huawei P30 Pro. What is it capable of and what technologies have provided it with leadership?

    evolution of photography

    The history of photography has almost two hundred years: the world's first shot on camera obscura Frenchman Joseph Nicephore Niepce made in 1826. Instead of photo paper, the enterprising inventor used a tin plate covered with a thin layer of bitumen. Three years later, his compatriot Louis Daguerre perfected the process and went down in history as the "father of photography". He discovered the method of daguerreotype for two decades remained the most popular technology for obtaining images.

    The first color photo in history was obtained only in 1861. English physicist James Maxwell combined three photos taken from the same angle, but with the use of separate color filters — red, green and blue (eng. Red, Green, Blue).

    Quote

    Subsequently, the abbreviation RGB - the legacy of Maxwell filters - served as the name for the color rendition standard.

    With the development of the industry, analog consumer cameras began to give way to the digital, and later digital mirror models that appeared in the late 1970s. The latter, in turn, competed with more compact mobile devices. The difference in the size of the camera lenses of modern smartphones compensates for the new technologies.

    Photo taken on Huawei P30 Pro

    The photo was taken on Huawei P30 Pro

    The camera sensor itself is used to convert optical images into electronic signals. He creates only monochrome images, and to “colorize” the frame, another component is used - a light filter. The industry standard for several decades remained the Bayer pattern - an array of red, green and blue elements covering the sensor matrix. The color picture is “glued together” from three black-and-white ones, each of which reflects the rays of light that have passed through their own color filter.

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    Attempts to reinvent the Bayer matrix were reduced to the banal permutation of three colors.

    Huawei engineers undertook to reconsider the well-established combination - replacing the green filter with yellow, letting in both the red and green spectrum, increased the efficiency of the SuperSpectrum RYYB sensor by 40%. In practice, the sensitivity of the flagship Huawei P30 and P30 Pro reaches ISO 204 800 and ISO 409 600, respectively. In combination with high-aperture optics (f/1.6 for P30 Pro and f/1.8 for P30), such values allow you to take a clear picture even in low light conditions.

    Left - Huawei P30 Pro (f/1.6, shutter speed 30 s, ISO 1600), on the right - Huawei P30 (f/1.8, shutter speed 30 s, ISO 1600)

    Left - Huawei P30 Pro (f/1.6, shutter speed 30 s, ISO 1600), on the right - Huawei P30 (f/1.8, shutter speed 30 s, ISO 1600)

    The Huawei P30 Pro photomodule is complemented by a Time-of-Flight (ToF) sensor - it emits light and records its reflection rate from the subject of the survey. In other words, it creates a three-dimensional map of the object, on the basis of which the device calculates the optimal values of background blur for portrait photography with the bokeh effect. The 3D camera, thanks to the ability to accurately determine the distance, replaces the laser autofocus sensor.

    Left: Huawei P30 Pro (f/1.6, 1/2 shutter speed, ISO 102 400), right: Huawei P30 (f/1.8, shutter speed 1/4 s, ISO 102 400)

    Left: Huawei P30 Pro (f/1.6, 1/2 shutter speed, ISO 102 400), right: Huawei P30 (f/1.8, shutter speed 1/4 s, ISO 102 400)

    It would seem that why use multiple cameras in one phone? To cover the full range of possibilities of optics "adult" cameras, dividing the functions of massive DSLRs between several compact lenses.

    Lens SuperZoom models Huawei P30 Pro supports a 5-fold optical zoom with an equivalent focal length (EGF) to 125 mm 10x zoom hybrid increases this value to 270 mm, and EGF at a maximum of 50 times digital zoom reaches 1343 mm.

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    A little more - and it will fit the SLR to the far shelf. As a reminder of the times when the cameras were great.



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