I will try, in my ignorance as a beginner on this topic, a small tutorial or explanation of what are photos HDR and how they can do the necessary means and their preparation. First understand what they are photographs HDR.

The HDR is an acronym for “High Dynamic Range” (High Dynamic Range), although the full name of this technology is “High dynamic range rendering” or HDRR (High Dynamic Range Rendering). This rendering technology mimics the functioning of the iris in the human eye. The human eye adapts on a continuous basis and with great effectiveness to different luminosities of the same scene as opening or closing the iris while integrating all the information is captured in the brain. Thus this body is able to clearly see a scene with areas with different lighting.