Photography
3 parameters rtelated to photography and photo brightness
A. Three parameters
1) Aperture size 2) Shutter speed 3) ISO size (sensitivity)
1) Aperture size
How big is the doorway and how much light can enter at the same time
2) Shutter speed
The length of the shutter opening and closing once, the slower the shutter opening time, the longer the light will enter.
3) ISO
It can be understood as an extra small flashlight, forcibly adding extra brightness (electronic signal), but it will increase the graininess of the image
B. Explanation of the values corresponding to the parameters
1) The aperture value is opposite to the size
F2 = large aperture
F22 = small aperture
(And so on)
2) Shutter speed
In seconds (16, 1/2, 1/8000 seconds, etc.), the smaller the value, the shorter the shutter opening time, and the less golden light
3) ISO value
There are 100, 800, 1600, etc. The larger the value, the more supplementary light is added, and the heavier the graininess is.
C. Adjustment steps in two environments
1) Under bright environment
1. Lower the ISO
2. Speed up the shutter
3. If not work, increase the aperture
2) Under dark environment
1. Increase the aperture
2. Slow the shutter
3. If not, then increase the ISO
Aperture Size
Shutter on Shutter off
ISO Speed
