Photographers who have a little knowledge about elementary physics would surely have a clue about the inverse square law. The inverse square law in physics is being used for various physical entities like gravitation, electrostatics and light.

The inverse square law of light holds true for a point source of light, according to the definition in physics, but in photography we don’t really use the point source of light since it is too harsh.

Ever if you are a beginning photographer you must be aware of what filters are and their various uses in photography. But for those who do not know, filters are camera accessories made up of glass that are used to get various coloured, black and white and focus effects, such as split focus, diffusion, colour correction and contrast reduction, in photography.

We have already discussed that a neutral density filter can be used to decrease the exposure, depth of field and increase contrast.

For those who have no clue about photography, you must be wondering why the word ‘shutter bug’ is often used interchangeably with camera.

For all those who have paid attention in their photography classes, aperture must be a familiar term. But for all those budding photographers who have not received any formal training, Aperture is the diaphragm opening of the lens.

Photography is an art that contains a synonym for light, ‘Photo’ in its very name. Photography is like painting on a canvas with light.