By: Jerald Buettner
A photograph's exposure determines how light or dark an image will appear when it's been captured by your camera. Believe it or not, this is determined by just three camera settings: aperture, ISO and shutter speed (the "exposure triangle").
aperture : a space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera.
shutter speed: the time for which a shutter is open at a given setting
ISO: how bright the camera makes the photo
Shoot in Manual Mode Pt. 1 - Aperture, Shutter Speed and ISO explained
when: use f 2 when you want a brighter picture and narrow picture use f 32 if you want a darker and more narrow picture
when: use faster shutter speed such as 1/6400 if your trying to photograph a running player but if you use a fast shutter speed less light will get in .
When: the lower the iso the less light thats produced so use lower iso when its bright out side