ISO - What Is It?

Here is an example of a photo taken at an ISO of 200:

Here is an example of a photo taken at an ISO of  3200:

1. The advantages to using a higher ISO at a sporting event is to reduce motion blur.

2. The author suggested that when using a low ISO there should not very much movement.

3.  The author suggested that when using a high ISO to make sure it is okay to introduce noise into the photo.

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Sources:

200 ISO Picture- http://thedigitaltrekker.com/2013/09/life-worship-and-sitting-around-bhaktapur-nepal/

3200 ISO Picture (National Geographic Photographer)- http://www.firstlightworkshop.com/uncategorized/national-geographic-around-the-world-by-private-jet-2103-samoa-great-barrier-reef/

Other- https://photographylife.com/what-is-iso-in-photography