Basic Photographic Materials and Processes, Third Edition by Nanette L. Salvaggio

By Nanette L. Salvaggio

For you to boost your inventive abilities to the easiest of your skill, you first needs to comprehend the technology and the basics of images. even if you're a scholar of images or a pro expert, this completely up-to-date variation of the vintage textual content easy Photographic fabrics and tactics will supply all the medical details that you just desire. complete colour all through for the 1st time, this 3rd variation covers new issues together with electronic answer, electronic sensor know-how, scanner know-how, colour administration, and tone copy. * the main finished therapy of the technology of images on hand * thoroughly up to date and revised to incorporate electronic techniques* complete colour all through for the 1st time * New subject matters lined contain electronic solution (sensors, printers, printer paper), electronic sensor expertise, scanner expertise, colour administration, and tone copy

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The third option is to capture the image in raw format and color-correct the image later using editing software. 13 A mired is defined as 106/K. A mired shift is the mired value difference between two light sources. A Wratten filter number is the common labeling system used for optical filters in photography. The Mired Scale Although color temperature provides a useful scale for classifying the light from continuous-spectrum sources, it does have some limitations. For example, a 500 K change at the 3000 K level does not produce the same visual or photographic effect as a 500 K change at the 7000 K level.

15 Daylight has a higher color temperature than tungsten light—and a lower mired value. 16 ■ Basic Photographic Materials and Processes The Munsell color system is a color space that specifies color based on their hue, value, and chroma. by these sources, the Cool White Deluxe lamp would provide more red light, resulting in a healthier, more natural skin-complexion appearance than that given by the Cool White lamp. Determining the color rendering index, R, for any given light source requires that the spectral energy distribution and the correlated color temperature are known, so that an appropriate reference source can be selected.

For example, if a person’s face were illuminated Color-Rendering Index Correlated color-temperature (CCT) specifications work quite well for describing the visual appearance of vapor and fluorescent sources. However, when considering the way an object’s color appears under a specific light source, CCTs are often misleading. A color rendering index (CRI) was developed by the CIE to evaluate a light source’s ability to accurately reproduce the Figure 1-14 Spectral-energy distributions for two fluorescent lamps with same correlated color temperature (4200 K).

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