ISO

 ISO 200

ISO 3200

1. You can take advantage of higher ISO during night sporting event, because the higher the ISO, the more sensitive it is toward lights.
2. Using low ISO is best when you want to retain the best quality of a picture, when there's good lightning.
3. ISO should be increased when there is not enough lightning to be able to quickly capture an image.
4. Canon Rebel T3 has ISO of; auto, 100, 200, 400, 800, 1600.