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Secondly, developers will now have the opportunity to significantly improve the quality of photos in low light conditions. This is done by combining several pixels into one large one. For example, the Redmi Note 7 smartphone has a built-in 48-megapixel camera, which uses TetraCell technology : when four pixels are combined into one large pixel with a size of 1.6 microns of the same color, the amount of light captured by one point increases by 4 times. As a result, instead of 48 MP, the user gets a 12-megapixel shot in 3: 4 format, or a 9-megapixel (4000x2250) in 16: 9 format.

Imitation of a telephoto lens by cutting out a specified fragment from a large file is also successfully used in modern phones. For example, the OPPO A9 2020 smartphone provides 2x and 5x zoom , which is not peru number data optical. Its secret is in using the excessive resolution of the 48 MP matrix. When taking a standard photo without magnification, four pixels merge into one large one. When you turn on the 2x or 5x zoom, the pixels are not merged, but the desired segment is “cut out” from the overall 48 MP image and thus an “approximation” of the object is achieved with almost no loss of quality. Of course, in night conditions, when TetraCell does not work, the quality of the photo with the zoom leaves much to be desired.

In Redmi Note 8, engineers went further and installed a 64-megapixel sensor, which also allows you to use digital zoom without reducing quality. That is, the user can cut out any fragment from a huge 64-megapixel photo and turn it into a separate photo with almost no loss of quality. However, in low light, the camera turned on the TetraCell pixel binning mode, that is, in night shooting mode, the camera output only 16 MP images .