From the relentless power of full sun over water to the beam from a single candle, it is light photographers play with, light in its many moods and manifestations that we capture on film. Photography depends on light. Therefore, an understanding of light, what it is, how it behaves and how you can learn to use it, is essential to creating superlative photos. Because the character and quality of a photograph can be altered by the character and quality of light, even the most-seasoned photographers puzzle over how a scene should be lit, what lighting angles to use for good results, and what exposure settings will bring out the best detail and tonal shading. When you are armed with the basic facts about light, you will find that such elementary questions become more easily-answered.
Light is the primary resource of a photographer.
The sun, Earth's main source of light, has long played a major role in the cultures and beliefs of different people.