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Definition: Aperture is the device for adjusting the size of the light inlet hole in the lens.
Common aperture values are as follows: F1, F1.4， F2， F2.8， F4， F5.6， F8， F11， F16， F22， F32， F44， F64。 The amount of light entering between adjacent aperture values of every two gears is twice the difference. For example, if the aperture is adjusted from F4 to F2.8, the amount of light entering will be doubled; Double from F2.8 to F2. The aperture value is opposite to the actual aperture size. The maximum aperture is F1, and the minimum aperture is F64.
Hehe, Sony WX5C (Taobao search information) is still very good.
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