[Photography follow me] 3D-like texture and you can very HDR

Digital camera channel 10 January, the popularity of digital cameras, so many fantastic light technology into ordinary people's lives.

Play photo to a certain time, you will be contacted to HDR. HDR seems fresh, but in fact, HDR photography has already developed more than half a century. In the early days of photography, people use negative film photography, even though exposure conditions are bad, and the resulting photos won't aberration to be there. This is because film, especially the negative relative wide dynamic range, you can get enough exposure tolerance.

An HDR effect sample

When the digital era, combined with a CCD, CMOS and other imaging chip, came into being in the popularity of the camera, so that people gradually neglected film machine exists.

However, in General, we contact the dynamic range of digital cameras in the show are difficult to achieve the expected demand, for example, in the light than larger environment, ensure that the details of the sky, makes the ground level are lost. Therefore, production can correct output exposure digital cameras become many camera manufacturers focus of the study. To solve this problem, some digital cameras in exposures, exposures, and strive to be more accurate processing scene parts of the exposure. With the development of computers anaphase adjust exposure, has become the most selective manner. Thus, HDR. This article is on the HDR technology as well as many of the digital era HDR for approach a introduction and comparison, I wish to help someone who likes photography you some insights.

HDR's full name is High Dynamic Range, high dynamic range.

We generally photographs, the standard is to use 8bit image records, grayscale level grade from 0-255 to represent from black to white interval, this a low dynamic range (LDR) images. And HDR by 16bit and even higher grayscales levels to record performance. In this way, the image information richer, record details is more accurate. Now, many digital cameras have service options in HDR. It in the application is based on the scene need to press the shutter, the camera at the same time record three different exposure photos. The general pattern is EV-1/EV0/EV + 1. But that doesn't make HDR, we need to go through the latter part of the high dynamic range rendering in order to get the final HDR photos.