Exposure in Photography is the first part of a fundamental series of articles for beginner photographers: 'Simple Photography'.
MORE EXPOSURE RESOURCES
There are you can learn about the exposure and enhance your skills to get beautiful pictures.
- Understanding ISO
- The Aperture in Landscape photography
- The Shutter speed
- Exposure triangle
- The Depth of Field
- The Histogram in Photography
- White Balance is part of the Exposition
- Exposure Triangle cheat sheet
- F-Stop Chart
- 3 Easy Steps to Fix White Balance in Photoshop
All photos start at the Exposure. If you shoot in Auto mode, you’re used to the camera set the exposure. But most modern cameras cannot take excellent result. Improving photography skills requires an understanding of the elements of exposure. You should understand how this works together, and not rely on «happy occasion». Easy to be tempted, and use Auto mode.
But if you learn the basic knowledge of the Exposure, you will take control of your camera. I deliberately avoided complex descriptions and examples. Photography is simple. It really doesn't have to complicate it.
What is Exposure in Photography
Exposure in photography is the amount of light that reaches a photosensitive element in a certain period of time.
The main goal is to set such values of shutter speed and aperture, at which the required range of brightness will be obtained on a matrix with a specific ISO sensitivity.
Exposure in photography is regulated in two ways:
change the shutter speed.
Exposure Value (EV) is the combination of aperture and shutter speed parameters.
A different set of exposure value can correspond to the same exposure. According to the law of interchangeability of Bunsen-Roscoe the essence of which is that long exposure with a large aperture is equivalent to a short exposure with a small aperture.
Choosing the right EV is determined by your goal. Should the photo be “blur” or sharp to 'freeze the moment'. That depends on you need a long or short shutter speed.
Right exposure is determined by exposure metering. This is a measurement of the intensity of light on the basis of which select the correct exposure value. Metering is performed using your camera’s photo exposure meter. Most modern cameras measure exposure through-the-lens (TTL). (Wikipedia)
If in automatic mode exposure is not measured correctly, an exposure compensation. Exposure compensation is a technique for adjusting the exposure indicated by a photographic exposure meter, in consideration of factors that may cause the indicated exposure to result in a less-than-optimal image (Wikipedia).
What is the Exposure Value (EV)
Very often you can hear the abbreviation EV. It is a conventional number, meaning exposure, which is necessary to obtain a normal brightness image. It also means a combination of shutter speed and aperture at which supported the same exposure.
Exposure Value Chart
The numbers in the table are the exposure in seconds and their fractions the numbers in the rows of the table are the EV, and in the bars F-Stops.
For example, the following two groups of parameters will make the same exposure:
1) ISO-100, f/16, 30sec
2) ISO-100, f/1.4, 1.4sec
Free download Exposure Value Chart PDF
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