We all know that the photo/photography effect of smartphones is affected by "several carriages", that is, CMOS image sensors, optical lenses and ISP image processor . In addition, we also get the NPU and AI imaging integrated in the SoC chip Gain tuning of algorithms.
Relatively speaking, CMOS image sensors are the easiest to be digitally quantified for easy comparison, such as sensor size, pixel value, single pixel area, focusing technology, multi-pixel integration, etc., which are all measures of a CMOS Strength and weakness parameter indicators.
Among them, the sensor size is the key parameter most easily accepted and understood by the general public.
Early smartphones were never able to compete with card cameras because the former was limited by its slim body and could not accommodate a large photosensitive element. However, in the field of CMOS sensor , there has always been a legend that "the bottom is too big to kill people", and the "bottom" here refers to the parameter of sensor size. The larger the sensor size means that the camera can receive more information when shooting. Lots of light.
The unit of sensor size is 1/x. Since the numerators are all 1, the larger the number corresponding to the denominator "X", the smaller the sensor size. For example, a 1/1.5-inch sensor size is larger than a 1/2.0-inch sensor. Choosing the former can often lead to better photography experience.
However, the larger the size of the sensor, the larger the lens module it is packaged with will also be larger, which will take up more space inside the phone and cause the lens to further protrude from the surface of the back cover.
Recently, Xiaomi has begun to warm up the Xiaomi 12S series of mobile phones. One of the biggest features of Xiaomi 12S Ultra is the world's first Sony IMX989, which has an unprecedented 1-inch super outsole.
According to official popular science, the Sony IMX989 sensor uses a 4:3 ratio instead of the conventional 3:2 ratio. It does not make any cuts and has a complete 1-inch super outsole (actually 1.02 inches, with a diagonal length of about 16.32mm).
This CMOS uses an advanced process and a four-Bayer color array. The single pixel area is 1.6ÎĽm. The four-pixel fusion pixel area can reach 3.2um. It is not easy to saturate and overflow, which means that a single frame capture can have enough With the dynamic range, Xiaomi can greatly reduce the trigger rate of HDR, which will greatly improve the shooting speed.
The Sony IMX989 sensor supports the Octa-PD phase detection focusing system that allows each sub-pixel to have focusing capabilities. It can appropriately increase the shutter speed and adjust the triggering strategy of the night scene mode in a targeted manner. Thanks to this, Xiaomi 12S Ultra has Powerful low-light capture capabilities.
It is reported that compared with the main camera of iPhone 13 Pro Max, Sony IMX989 has a 172% increase in photosensitive area, a 76% increase in photosensitivity, a 32.5% increase in camera speed, and an 11% increase in startup speed. In the words of Lei Jun , Sony IMX989+ Leica +Xiaomi imaging brain, the perfect combination complements each other and is the ceiling of current mobile phone imaging hardware.
So, do you look forward to the actual imaging performance of Sony IMX989?
