Aperture.

Aperture is a setting that i have always been very unsure of and not sure how to work. After a bit of research i found out that aperture is the size of the opening of your DSLR lens. It determines the amount of light that reaches the cameras sensor.

The seven aperture values are:
f/2.8, f/4, f/5.6, f/8, f/11, f/16, f/22

( The larger the number the less light entering the camera)

After messing around with Aperture i gathered that a Small f-stop = larger opening = more light entering camera and a Large f-stop = smaller opening = less light entering camera. By moving from f2.8 to f4, you are decreasing the light entering the camera by one stop or halving the exposure. By moving from f8 to f5.6, you are increasing the light entering the camera by one stop or doubling the exposure.

I am still a little unsure about aperture but i will continue to experiment.

I found an interactive website which I found quite useful in showing aperture differences.
http://www.digitalslrphoto.com/interactivedslrguides/apertureguide/