2. Sensor size "recommended collection"

Hello everyone , I meet you again , I'm your friend, Quan Jun .

Speaking of sensor Of Size , In fact, it means the area of the photosensitive device , This includes CCD and CMOS. The larger the area of the photosensitive device ,CCD/CMOS Larger area , The more photons captured , The better the photosensitivity , Signal-to-noise ratio The higher the .

The following is the household small DC Image sensor size is converted to metric size （ Unit is mm ）: 2/3 Inch frame area is (8.8×6.6mm) 1/1.8 Inch frame area is (7.178×5.319mm) 1/2 Inch frame area is (6.4×4.8mm) 1/2.7 Inch frame area is (5.27×3.96mm) 1/3 Inch frame area is (4.8×3.6mm) 1/3.2 Inch frame area is (4.536×3.416mm) 1/3.6 Inch frame area is (4×3mm)

1/4 Inch frame area is (3.2×2.4mm) 1/5 Inch frame area is (2.55×1.91mm) 1/6 Inch frame area is (2.15×1.61mm)

If ：

The focal length f = 35mm Highest resolution ：4256×2832 Sensor size ：36.0×23.9 mm

According to the above definition, there can be ：

u0= 4256/2 = 2128 v0= 2832/2 = 1416 dx = 36.0/4256 dy = 23.9/2832

fx = f/dx = 4137.8 fy = f/dy = 4147.3

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