Over the years, smartphone manufacturers have competed to add as many pixels as possible to their cameras, but more pixels does not guarantee a good camera. After a short break, manufacturers began to try to fill more pixels. Devices like the Samsung Galaxy S20 Ultra and Motorola Edge + have a 108-megapixel main sensor. Samsung ’s latest ISOCELL GN1 sensor has fewer pixels, but due to improved autofocus and larger pixels, it may be able to take better pictures.
Like many aspects of modern smartphones, camera performance is limited by the size of the device. Compared with real cameras, these camera sensors are much smaller. The higher the pixel, the smaller each pixel on the sensor and the lower the sensitivity to light. When the manufacturer developed a pixel binding technology that could bundle several smaller pixels together and work like a larger pixel, the megapixel competition began again. So, your phone may have a 108-megapixel sensor, but the photo is only 12-megapixel.
The ISOCELL GN1 has 1.2um pixels, which is the big aspect of the smartphone. It also supports Samsung Tetracell pixel-binning technology to produce larger effective pixels (2.4μm) and collect more light. Samsung said that this will double the photosensitivity of the sensor and produce 12.5 million pictures.
Samsung released the S20 Ultra and the 108-megapixel ISOCELL Bright HM1 earlier this year. Although this sensor is technically more powerful than GN1, it is not as good as we hope in practical applications. The S20 Ultra is almost universally ridiculed for slow response autofocus, which enables phase detection technology. With phase detection, light splits when it enters the camera. The lens element adjusts to merge the two images, which means that they are the focus. However, it is difficult for a large sensor to do this.
ISOCELL GN1 should be able to improve focusing performance by using dual pixel autofocus. Two-pixel technology analyzes the signal of each diode to determine the focus, and then combines these signals to create a clear image. Dual-pixel technology specifically refers to two photodiodes per pixel, and a total of 100 million phase detection autofocus (PDAF) agents.
ISOCELL GN1 will be mass-produced later this month, so it may appear on mobile phones this summer. -Some will come from Samsung, but many will not.
Although GN1 sounds like a good choice for the 108-megapixel HM1, Samsung may not have finished repairing the sensor. We look forward to seeing HM1 return in the Galaxy Note 20.
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