Aperture refers to the hole in your camea that lets light in. YOU can control how much light comes in. So what is the difference between Shutter Speed and Aperture. Your Shutter Speed refers to the amount of time the light is coming in. Aperture refers to how big/small the hole is and how MUCH light comes in.
Now stay with me as this next part may be confusing. The SMALLER the number 1.4, 2.5, 5.6 etc... the bigger the opening the MORE light comes in... Want that perfect shot of your child that has a blurry background? Use a smaller Aperture....
This photo was taken with an aperture of 4.5. You can see the blurred background.
Larger Number: Narrower Opening and Less Light
Just one more thing to remember: Portraits Pop with a shallower depth of field. (blurred background). A smaller aperture will give you a shallow depth of field allowing you to keep your subject in clear focus and the background blurred...
So now we have talked about the Exposure Triangle!! What you say? You never said anything about a triangle. The Exposure Triangle refers to ISO, Shutter Speed and Aperture..
Sweet Dreams.... Stacy