Samsung Announces its Own Dual Pixel AF Sensor

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BusinessWire: Samsung announces its 12MP, 1.4um dual pixel sensor for smartphones, already in mass production. The dual pixel is said to enable rapid AF even in low light situations.

With 12 million pixels working as a phase detection auto-focus (PDAF) agent, the new image sensor brings professional auto-focusing performance to a mobile device,” said Ben K. Hur, VP Marketing, System LSI Business at Samsung. “Consumers will be able to capture their daily events and precious moments instantly on a smartphone as the moments unfold, regardless of lighting conditions.

The new image sensor employs two PDs located on the left and right halves of a pixel, while a conventional PDAF-equipped sensor dedicates less than 5% of its pixels, with one photodiode each that converts light particles into measurable photocurrent for phase detection. As each and every pixel of the Dual Pixel image sensor is capable of detecting phase differences of perceived light, significantly faster auto-focus has become possible, especially for moving objects even in poor lighting conditions.

The image sensor has also adopted Samsung’s ISOCELL technology, which isolates the photodiodes in each pixel with a physical wall to further reduce color cross talk, maximizing the image sensor’s performance.

The new image sensor is built with chip-stacking technology: a 65nm sensor on top of 28nm logic chip.

Meanwhile, GSMArena found an unscientific Youtube comparison of speeds of Galaxy S7 dual pixel AF and Canon EOS 70D DSLR dual pixel AF:

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