CCD and CMOS

 

CCD

A CCD (charge-coupled device) is a device that transfers electricity. In other words, convert them to digital values. It is a device that converts digital signals to digital values.

CMOS

Complementary meta-oxide-semiconductor is a technology that guides chips to form very high-quality ICs (integrated circuits). More performance than CMOS image CCD images. Smartphones used to use only CCD sensors, while modern smartphones use more expensive and sophisticated CMOS sensors.

Light entrance

Aperture is the entrance to light. You can see that f / 2.2, f / 1.8, f / 1.7 show how much light can enter. The smaller the number, the larger the aperture.