Dynamic Range Increase

Dynamic Range Increase (DRI), increase the tonal range, the method consisting in the appropriate application to each other and contain several layers of masking the same scene exposed in different ways. The most important difference, in a simplification, of course, is that DRI is a lot in practice, replacing one image with different stretches, these parts are relatively large, sometimes it can be an inch piece of heaven, while the HDR changes are occurring in each pixel image.