Understanding ISO

Do you understand ISO? 

ISO stands for the, International Standards Organization and is the sensitivity to light. An easy way to remember how ISO works is your skin. The paler you are, the more sensitive you are to light. That connects to ISO because the lower your ISO is, the lower sensitivity your camera is out. Or you can say it lets less light in. When it is at this lower sensitivity, you will have fine grain with bright lights. Then the higher your ISO is, the higher your sensitivity is or you are letting more light in. Which lets grain into the picture and is a low, dark light. Certain cameras have different ISO numbers. The canon I used went from an 100 ISO to an 6400 ISO. Under here is an example of how it is measured. 

To be able to change your ISO, you need to be on manual mode! If you would shoot in auto mode, the camera selects it without you choosing. When you change the ISO of your shot, you will need to change your shutter speed, or aperture. With a low ISO, you will have a faster shutter speed, and with a high ISO, you should have a slow shutter speed. 

 

This is a picture with the lowest ISO, which is an 100. 

   

This is a picture with the highest ISO, which is an 6400.