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Monday, April 29, 2013

Photography: Chapter 4

Popular rules and guidelines

Digital cameras these days make a lot of decisions during the shooting process, and it’s important that you understand what it’s doing and why. I always recommend to use manual settings so as to have better control and understanding of your camera. Therefore, it’s very important to understand and use these rules and guidelines

Sunny 16 rule

Sunny 16 rule help to check your current exposure settings. Before digital cameras, photographers had to carry light meters with them. But if they didn’t have time to take a light reading, or they didn’t want to bother with carrying the equipment, they could resort to Sunny 16 rule.

The rule says, on a sunny day set aperture to f/16 and shutter speed to the reciprocal of the ISO for a subject in direct sunlight e.g. on a sunny day and with ISO 100, one sets the aperture to f/16 and the shutter speed to 1/100 second (or 1/125 as on some cameras this is available setting nearest to 1/100 second)

If you want to play with the values of aperture or shutter speed (for creativity), use this rule to ensure proper exposure. A list of reciprocal settings would all produce the same exposure result e.g. for Canon EOS 60D, the list is as depicted below:


Golden hour

In photography, golden hour is roughly the first hour of light after sunrise, and the last hour of light before sunset, although the exact duration varies between seasons. During these times the sun is low in the sky, producing a soft, diffused light which is much more flattering than the harsh midday sun. Typically, lighting is softer and warmer in hue and because the contrast is less during the golden hour, shadows are less dark, and highlights are less likely to be overexposed.

In landscape photography, the warm colour of the low sun is often considered desirable to enhance the colours of the scene

The golden hour rule can be applied to any type of outdoor photography. It is more obvious for landscapes and city scenes. However, it also works well for outdoor portraits, shots of flowers etc.

There are many photographers who follow this rule very rigidly and always try to do their outdoor photography during golden hours only.


Rule of thirds

It proposes that an image should be imagined as divided into nine equal parts by two equally-spaced horizontal and two equally-spaced vertical lines and that important compositional elements should be placed along these lines or their intersections

Belief is, that aligning a subject with these points creates more tension, energy and interest in the composition than simply centring the subject would


References
1. Wikipedia
2. Internet


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