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High Dynamic Range

High Dynamic Range other wise known as HDR, is a process that is applied to the image by the camera to compensate for colour loss, it gives an image a higher Dynamic range.

Below you can see the effect in practise, The picture on the left shows how a camera usually captures an image and the image on the right shows a picture with HRD enabled. 


The way HDR works is by combining three or more photos, one with normal exposure, one over exposed image and one under exposed image. Depending on the lighting of the area it can make an image look more blown out. HDR is very useful in low light areas. If the camera is unable to take a normally exposed image it will instead combine the images to create an effect of normal lighting.

Before taking a photo with HDR enabled you have to remove any movement from the shot otherwise the image will come out blurry and you will get a ghosting effect. Some advanced forms of HDR are able to to combat the effect of ghosting.

To take a good HDR photo focus, aperture, ISO, and white balance must stay the same. For professionals that have the ability to take a photos in RAW they usually don't like the effect that HDR creates, With the ability to customise an image completely by using RAW a photographer would rather be able to have 100% control over the image.

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