Exposure: a basic EXPLANATION of Exposure

What is exposure?

You may be asking "How do I get the right exposure in my pictures? How does exposure work? How does aperture work? How does ISO work? How does Shutter Speed work? What do I do now that I have this big fancy camera? 

Don't worry, I asked the same questions. Everything I know is from trial and error. Lots and lots of errors. I mean LOTS. I watched videos on youtube, read tutorials, pinned 50 blue million tips and tricks on photography. By the way, just pinning them does no good. You kinda have to go read them and put them into practice........
Anyway, I prescribe to the ideology that if you really want to learn you read it/see it, do it. teach it. So let me pass on what I have learned!

Photography is a science of light

Photography is all about light. How much light, for how long, and how sensitive your camera is to that light, determines the exposure of your image. 
How much light is determined by Aperture.
How long the light is allowed in is determined by Shutter Speed.
How sensitive your camera is to light is ISO. 

The Exposure Triad

All three settings can be manipulated depending on the type of picture you are taking. Faster shutter speeds are used for action shots like your son's basketball game. For this picture you probably want to open the aperture for more light and increase your ISO because basketball games are typically inside and the lighting may be poor. However, if you want a little motion blur you may slow your shutter speed just a bit. 

Increasing your ISO can be helpful indoors, or on really dark gloomy days. Just be aware of your camera's limitations. Some entry level DLSR's are quite good at mid range ISO settings. But really high ISO's are normally best left to upgraded models. 

Aperture is also good for increasing or decreasing your exposure. Just be aware of your lens Aperture capabilities,  and pay attention to how much detail you want in your foreground and background. 

The links below will be added as I publish each individual post! 

Aperture Explanation

Shutter Speed Explanation

ISO Explanation

I would love some feedback! What made sense? What was confusing? What are your ideas for explaining exposure?