Exposure Triangle

To get that perfect exposure or look you are going for its always good to keep in mind the exposure triangle. I try to shoot all my photos in Manual mode so I have full control over my Exposure, Aperture, ISO.  The triangle below explains what each of the 3 settings does:

Aperture: controls the area over which light can enter your camera
Shutter speed: controls the duration of the exposure
ISO speed: controls the sensitivity of your camera’s sensor to a given amount of light