The quality of the camera is the latest ”arms race” for smartphones, and one of the most significant factors for creating great pictures is the camera’s sensor. At that time, as a large number of megapixels is becoming an increasingly popular trend, the size of the image sensor of the camera is actually much more important. For example, Huawei continuously boasts that includes their flagship phones the sensors are larger compared to competitors. Component manufacturers, such as Sony and Samsung, are also increasingly paying attention to the size of their sensors. But why is the camera sensor size is so important for getting great photos? And most importantly, why sensor size is more important than resolution, if everything in the world tends to miniaturization?
In a nutshell, the larger sensor receives more light and the smaller less, but the problem is much bigger than ”little” light. Let’s understand everything in order.
What is the sensor size of the camera phone
At a basic level, the sensor size determines how much light enters the camera to create the image. Although resolution plays an important role in the details, namely the number of captured light, determines the balance of the camera exposure, dynamic range and even sharpness. That’s why a 16-megapixel and 20-megapixel SLR camera, released a few years ago, still offer better image quality than the modern 108-megapixel smartphones.
What is aperture and why is it important for the phone's camera.
The majority of smartphone sensors usually have a size of only 1/2,55 inch or about 1 cm in diameter, although some are larger — in 1/1,7 inches and above. For comparison, the sensors in DSLR camera are larger than inches, easily exceeding the size of the matrix smartphone 4 or 5 times. The sensors of smartphones compared to them just a wee, though some brands try to reduce the gap. Currently the largest sensor disgraced smartphones Huawei series P40. Its diagonal is 1/1,28 inch.
What are the advantages of cameras with a large sensor
The larger the sensor, the more light it captures for a given shutter speed, ISO (sensitivity exposure) and aperture. The lack of light can compensate for longer shutter speeds, but it will lead to blur the image.
Another reason that a large sensor is a little better at the same resolution is a wider dynamic range. So call the difference between light and dark areas. That is, with a larger matrix size, the picture will be more clear and contrasting.
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Suffer from the pictures and from the point of view of occurrence of unnecessary noise. As photosensitive elements are arranged very close to each other, they can get distorted and the light from it will appear additional noises. Noises will appear and from the above mentioned shortage of light. The sensitivity of the sensor will rise and the picture will deteriorate even more.
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With on more resolution (now above 100MP), the increase in sensor size has become more important than ever. Of course, sensors with a resolution of 48 MP 64 MP, and even MP 108 will be able to give a less detailed image in bright light on a Sunny day, but do not expect that you can bring something that is at a distance of a kilometer, print and frame it. The quality will be sufficient only to distinguish the silhouette of the object, but no more. This increase is just a toy, but no more. Even the human face cannot be distinguished. Especially if the lighting is not very good.
Another relatively fresh trend in the mobile space is the technology of combining pixels allowing these sensors of high resolution to combine pixels for better capture of light. These larger sensors and thus larger pixels greatly improve photo quality in low light. This leads to less noise and much better color, even in dimly lit conditions.
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Large sensors are almost the most important component of a good picture in low light. Even the side good only on a large sensor. Smartphones still further process the image, but it so often turns out unnatural blur.
What affects the quality of the pictures
It is worth to add that sensor size is not the only criterion of quality of the image — it’s just that he is more important than resolution, which after a long traveled abroad does not carry any meaning.
For a good shot important lenses lens. Do not think that the glass is the same everywhere. It is on the eye they are all the same, and for the camera transparency and accuracy of the lenses critical. How important is the design of the lenses in the lens system. For the optimal design takes years and millions of dollars. Just for this fight would not.
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Have you ever noticed that the pictures of the two smartphones with the same camera differ very much? All due to the fact that they are processed by different image, and it is also very important. The lens transmits light to the matrix and that generates only a few million colored dots, which are necessary to properly handle and assemble into a finished image. Doing treatment program. Here sometimes mixed with machine learning, but still it is software processing.
You still think camera resolution is its most important characteristic? And here and there. There are far more important parameters, but if AT the optics and everything is less understood, with the sensor size have something to do and prevents this is that the camera will stick out even more, if you do not find the case for additional place. That’s the problem.