Digital photography and digital darkroom technique: right. Experts out

From the film photography in the process of transition to digital experienced shadowfax change, but meanwhile, photography foundation -- -- light remains intact. Photography is actually "writing" run, it means that photographer is light writer. To show the light in front of us, that we become a photographer. After all, everyone can purchase high quality digital camera, but very few somebody can run on the subject in the right. Can you think out right: writer.  goodprintsonline

Eyes and camera. 4.1

Everything from how we see light rays began to record and camera. More complex is the content may be cameras in printing on a page. Introduce below its reason.

In the light of the sun, shining brightness is too wide range, digital camera or film cameras, they can also shooting into the details within the highlights and shadows. The fact of the brain and visual processing method is different. We watched in wide range of scenarios, brain first noticed the brightest area. Among the highlights and remember it in detail, then tone, notify the pupil to observe the details within the shadows. The two images of real-time brain -- the brightest image and the dark image - combination rises, make we think we saw the brightness of the scope of the actual than we can see the breadth. In other words, the brain of the real-time image processing. Do Photoshop Who knows?

Digital cameras record than film wide range of brightness, this is good. But the problem is not reproduce the brightness of the film printer, not to mention the brightness of the digital camera. Can be printed the brightness of the light will also display range highlights and shadows in detail. Good inkjet printers can keep RGB values for 25 to 40 between the shadows and highlights to 249 242 between within the scope of the image detail. From the print, but also Lightroom RGB values are expressed as a percentage. 7 percent to 95% brightness range between in detail can reappear shadows and highlights. Printers, ink and paper combination can also affect the result. A new printer can reappear the brightness of light or beyond wax paper oily paper. Art paper, paper and water were rough or canvas sheet recreate the highlights and shadows details range of smaller. If the sampling RGB value when low or high, will sacrifice shadows or specular within the details. Today's digital camera complex built-in software to help set exposure, resulting in very consistent image quality. The algorithm can tell the camera to take care of, or discarded which end range. Usually keep within the specular preference, and shadow detail. This is a cameras to good compromise.

LIGHTROOM value

Lightroom engineer (and about 50 million beta-tester) first saw the digital photographer see everything. Then they asked: "this really meaningful?" Which one is not red, green, and blue value displayed. In percentage display Lightroom RGB data. Therefore, 0% is black, white is 100%. Photoshop and Bridge is black, the 0 shows that for white. 255 Accustomed to 0-255 notation photographer may not understand Lightroom percentage. One of the solutions is multiplied by the percentage of reading Lightroom tools within, which convert to familiar 0-255 notation. Therefore, the Lightroom 97.3%) is 249 RGB. The 25 is about Lightroom RGB of 10%. This book will demonstrate that in proper place two notation.

Figure 4-1

In figure 4-1 in the Camera and Photoshop RGB value displayed in the Raw and its corresponding top Lightroom value displayed in the bottom. The black and white paper between 21 level gray. You can see a few levels? In order to facilitate comparison, continuous gray color is light for step type wedge.