Even the most modern digital cameras have a limited dynamic range. Drastic lighting contrasts exhibit this restriction easily, such as with a photo taken indoors looking outside, like in the first example shot. You either have a properly lit interior, where the surrounding park behind the arches are far too bright, or an image with an adequately lit park, but with an interior that is far too dark.
HDR technology, short for High Dynamic Range, clears up this problem by generating images with an extremely large dynamic range, unmatchable by monitor displays or prints.
The idea is simple – several images with varying exposure times are assembled into one image. In our example, three shots are fused: an image with a longer exposure time to capture the dark details inside the pavilion, a short exposure shot where the park behind the pavilion is correctly lit, as well as an exposure exactly in the middle.
The combined result is a single image containing all of the light, midtone and shadow detail. HDR projects 7 professional does the work for you. The capable program merges the bracketing exposure images and uses tone mapping to establish a photo fit for printing and screen displays.
The combined image contains all of the details of the pavilion and park, properly lit just as we saw the scene with our own eyes.
An obvious case for HDR projects 7 professional – an evening scene with lanterns can only be captured naturally using HDR technology. Otherwise, the dark surroundings would not be capturable with the bright lights. A camera sensor’s range of contrast is very limited when compared to that of the human eye.