The Camera - ISO and Gain

 ISO (international organization for standardization) is a setting that controls the amount of light the camera lets in. The ISO controls how dark or how light a picture is going to be. 

A lower ISO yields a darker, but sharper picture, whereas a picture with a higher ISO value, is much brighter, but it also has a lot of noise and grain which can affect the quality of the picture. 




It is better to use a low ISO when there is ample lighting in the room, or if you are outside in order to get a clear picture with little to no noise. A higher ISO can be used when it is dark or if the lighting is low and there is no possibility to have a long exposure.  




ISO (personal pictures): 

100 ISO

200 ISO

400 ISO

800 ISO

1600 ISO

3200 ISO

6400 ISO

12800 ISO
In these picture examples above, we can see that as the ISO increases, the more darker and grainy the picture gets. 
 

Just like how digital cameras use ISO, video cameras use gain to amplify the intensity and brightness of the video. 

The times to use gain are the same as the times and moments to use ISO in a camera. A lower gain value for settings that are brightly lit, and a higher gain value for darker settings. 

Gain (camcorder examples)


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