ISO

Using the ISO on your camera to calculate a change in the photographic exhibition


ISO stands for International Standards Organization, an administrative agency based in Europe that provides standards for a wide range of topics. The initials are used for the film speed or speed cameras in photography, where the rate sensitivity of the light. In the past it was known as ASA.


Most good digital cameras have a removable ISO rating. A camera with an ISO setting of 100 is twice as sensitive to light as a camera with an ISO of 50. More film, more sensitive to light. If you take a low light image with a digital camera using a rating of ISO 200 or slow up.


Most digital cameras have ISO settings variable to be used for different types of photography. If you pull on a clear high speed or low sensitivity of ISO 50 or 100 should do. In light of my scenes a low ISO of 400 or more a better choice.


This is similar to a film camera you buy. Each film has an ISO rating and work with the same principles as your digital camera. A film speed of 400 is twice as fast as the speed of the film 200, which means it allows twice the amount of light.


Note that if you have a high ISO number of your image can be shown to have noise. The noise will affect your images a grain expansion. All the photographers want noise free images are so selective use of ISO is important.


If you do not know what setting to keep your camera is ISO 100. With this setting you have a very colorful picture.


ISO settings can also be important in determining exposure. As you know, the diaphragm and the shutter in the camera monitoring the amount of light that your camera. The ISO of your camera or film will also calculate the progress difficult.


To explain using this example.


You're in a scene and want to use an exposure of f/22 with the shutter speed to 1 / 2 seconds and the camera is set to ISO 100. The scene you go take a good shot, but there is running water in a hot scene and you want to put in the water.


A shutter speed of 1 second will do, but if you keep opening set to f/22 you overexpose the shot. The simplest is the ISO of your camera set at 50.


A setting of 50 ISO and f/22 for 1 seconds, it's like a setting of ISO 100 and f/22 at 1 / 2 seconds. If you shoot with a film camera you need to change the film ISO 50.


As mentioned earlier, a photography setting of ISO 100 is good for portraits, landscapes and nature. Remember when you take very bright days to change the ISO and 50 days to change boring at ISO 200.