aperture F16
1. The pupil, large pupil size equals large aperture, while the small one equals small aperture.
2. The smaller the Aperture the larger the f-number, the higher the Aperture, the smaller the f-number.
3. The size of the aperture, the area of the image appears sharp.
4. F4.0, 4.5, 5.0, 5.6, 6.3, 7.1, 8.0, 9.0, 10, 11, 13, 14, 16, 18, 20, 22, 25
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