Light in Photography

Light is a very important factor in photography. It can affect the outcome of the photograph...

Light is part of the electromagnetic spectrum, which ranges from radio waves to gamma waves. Electromagnetic radiation waves transport energy from one location to another. Visible light waves are the only electromagnetic waves that the human eye can detect. We see these waves as the colour of the rainbow. 

 

The lens aperture or the  shutter speed can be changed to achieve the desired exposure. Opening up the aperture increases exposure, but also decreases the depth of field, and a slower shutter increases exposure but also increases the opportunity for motion blur. The angle of the light can create different affects in photographs. For example, a shadow casting over different areas of a photograph or over half of someone's face.