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Choosing the Right ISO for Digital Photography


ISO stands for International Standard Organization, a term which is popular among photographers, young and old. In order to be able to take great pictures, it is important to know about ISO and how choosing the right ISO is important to help click some great pictures. ISO, to put it simply, is the measurement of the sensitivity of film to light. Now that traditional cameras have been replaced with digital cameras, this definition has been slightly modified to mean the measurement of sensitivity of the sensor towards the light. This is especially important if you are trying to get a picture clicked where there is a lot of movement or there is a lack of light which you do not want to impact the pictures.

The purpose of using ISO, as mentioned earlier, is to allow light to filter into the sensor when capturing images which are moving or which have been placed in shade. The higher the ISO, the higher light captured. However, this does not always mean that a higher ISO is a good thing. Normally, it is considered preferable to maintain a lower ISO as with increase in ISO, the noise or graininess of the picture increases which subsequently reduces the clarity and thereby quality of the picture.

As mentioned, ISO is a good option to capture an image which is moving and does not have adequate lighting. However, this might bring up a question as to how this helps as compared to reducing the shutter speed. The problem here lays in the fact that a lower shutter speed requires that the picture is taken using a tripod in order to achieve the optimum result. And if this is not an option, a higher ISO might be the only option available.

Similarly, if you prefer a picture which would be an impressive piece of art with the grained look which higher ISO would provide, then you can go ahead and try that and the outcome could be a picture which is quite different and unique as opposed to the clean, neat pictures that are traditionally taken.
Also, another question to ask while deciding on the ISO setting for you digital camera is whether you would have a secondary device which will be able to provide artificial lighting like a flash. If you have a flash available at your disposal, then it would be better to use it rather than depend on your ISO to get you some good shots.

And most importantly, the one factor that needs to be considered while setting the ISO is the purpose of the picture as well as the factors that require emphasizing in the picture. The best way to capture an image with the right ISO setting will be to play around and experiment your digital camera so that you can understand the impact of each setting separately. Also, in case you decide to change the ISO setting, it would be a good idea to change it back once you are done clicking the pictures so that you don’t end up clicking pictures with the incorrect ISO setting without realizing it.

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