By changing the IOS level I found I had to change my shutter speed so my image wasn’t overwhelmed with light or lacking light. I did notice a change in my images. The ones with the lower IOS were sharper and less grainy and less noisy.

I decided to use the same subject in the majority of my images because I wanted to show the difference between the IOS levels and how it affects the camera.

The rule is as you increase IOS, decrease shutter speed. (eg. From 1/25 to 1/120)