From Photopedia
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This is a Photographic Encyclopedia, you can find all concern the photographic world.
This project started in 2006 and up to date is made up of 10 articles.
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The article of the week
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| High Dynamic Range
The dynamic range of an image is the ratio between the maximum and the minimum luminance value.
The real world shows a vast range of light intensities ranging from star-lit scenes to white snow in sun-light.
Even within a single scene the range of luminances can span several orders of magnitude.
In such a case a photocamera is not able to recorder all the dynamic range, if you set the exposure for the highlights the shadows will be dark, if you properly expose for the shadows the highlights will be burnt. If a mean exposure is used, details are lost in shadows and highligths.
A camera can produce only LDR (Low Dynamic range) images. Camera sensors are far away from human eyes. Monitors and printers are LDR devices too, so an HDR image must be compressed to a low dynamic range in order to be viewable.
What can we do to get a photo more similar to the world scene?
Is raw shoting a solution?
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