What is photography

Photography is an art of capturing moments in a frame. An object is seen when light falls on it and is reflected back to our eye, everything that can be seen in this world is only because of light. So in order to take a picture of an object, one has to capture light reflected from that object. When we talk about photography, we actually talk about light and different ways to capture it. A little knowledge about light and its properties is necessary to understand photography.


Video credits Joe Edelman

Importance of Lighting in Photography

Light: It is a spectrum of electromagnetic waves. Human eye can observe only a part of the light whose frequency is between 400nm to 780nm(approx.). So in photography all the light we see fall into this frequency range.

Things to remember:
  • Light travels in straight lines.
  • Intensity of light decreases by square of the distance.


Following video explains how inverse square law applies to photography

Video credits Gil B

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