Now phones are equipped with LED fill light, night, shooting in dark environment fill light, but take out the fill light on the effects and not very good, there is always white, colour, color is completely deviated from the normal color problem, full-spectrum light lamp handy at this point.
We'll look at full-spectrum light sources:
"Full-spectrum lamps, also called UV-b lamps. Such lamps may make the most of natural light lights, because they emitted light full spectrum, that is, all the light waves are. Includes all colors of visible light, and a small part of ultraviolet light. Full spectrum light bulb factory was producing: Duro-Test Vita-Lite, GE Chroma 50, Colortone 50 Philip company, and Sylvania Designer 5000K. Above all light bulbs can be issued to current chemical technology can be most similar to the natural sun light. These lamps can be made near the Equator at noon light, its color temperature is approximately 5000K. Duro-Test selling Vita-Lite 75 lamps, GE Chroma 75 lamp, Philip has produced a Colortone-75 lamp. These lamp price and generally there are considerable gaps. "-The above is an excerpt from Wikipedia.
Spectrum is a polychromatic light dispersion system (such as prisms, gratings) after light, scattered monochromatic light of wavelength (or frequency), size and order of images, called the optical spectrum. In the light, spectrum's largest part of the visible spectrum are part of the electromagnetic spectrum visible to the human eye, electromagnetic radiation in the wavelength range is called visible light. Spectrum does not contain all the color vision of the human brain can distinguish, for example, Brown and pink.
We know that the Sun and the continuous spectrum of incandescent lamps are radiation, the wavelength of visible light (380nm-760nm) range, including red, Orange, yellow, green, cyan, blue, purple and other colors. Objects under incandescent light and the Sun, showing its true colors, but when an object in a non-continuous spectrum under gas discharge lamps, colors will have different degrees of distortion. Our objects true color rendering of light source on the level known as the color of the light source.
Quantitative evaluation of color rendering index of the light source, introducing the concept of color rendering index. Subject to the standard light source, its color rendering index is set at 100, and other color-rendering index of the light source are less than 100. Color rendering index Ra, Ra value, the more and better color rendering index of the light source.
(Picture taken from the network), we take a picture, we can see that figure 1 is the standard light source we say, Ra value is 100. While Figure 2 launch is a continuous spectrum, Ra is 95, Figure 3 is the Tri-phosphor fluorescent spectra, we can see lots of color is not displayed on the spectrum, true color fluorescent lamps up to Ra value will be a lot worse. In the context of such a light source and color effects on the shoot was quite significant. We see on the left the proofs, at Ra value equal to 75 times, real color and color deviation from the serious, overall green. While Ra was 95 on the right light source radiation shooting out of proofs are much more accurate color. Ra larger values, represented this time closer to full spectrum light source, light source contains more light, more visible color.
So we can be understood as: full spectrum LED fill light will reach a very high Ra value, which contains all wavelengths and all colors of visible light, and a small part of ultraviolet light. Can be issued one of the most natural light sources lighting, in order to restore the subject's natural color. We often say that the natural daylight color temperature is 5500K, but defined in the international standard light source color temperature is 5000K, so here we can probably speculate that color coded LED fill light color temperature between about 5000-5500K. And in vivo official Twitter has today revealed its next flagship model Xshot will use a full-spectrum LED praevia fill light fill light used as a camera, then the full spectrum on the Xshot fill light is also closest to the natural light effect, this let us leave it to the time to verify it. YSL iPhone 5 Case
When it comes to fill light effects of color temperature on shoot color, international mobile phone giant Apple's latest models: iPhone 5S also did fill light effort, they had no concept of full spectrum light lamp, but instead of using a double Flash design: a cool fill light and a warm fill light. Warm in the cold and the fill light can be set automatically depending on your shooting environment different color temperatures, officials claim to be able to use more than 1000 kinds of unique combinations to determine required the appropriate percentages of white and yellow and intensity. Finally presents the colors more vivid images. Tone is not too cold or too warm, high-light effects better, make skin more naturally.
From these two solutions, Apple iPhone 5S practicality of a dual color fill light may be strong, after all, based on your current environment under intelligent fill using a variety of color combinations would be more effective. Full spectrum LED fill light work are certainly not terrible, when Apple has two color fill light is designed to self fill light and open the case as well as restore the true color. And full spectrum LED fill light emitted is closest to the light source, believe light effect compared to the previous General LED light Lantern Festival has greatly improved. But iPhone 5S but no Qian reset fill light lamp of (Xshot of back also using has iPhone 5S of double color temperature fill light lamp design), and Xshot of this star Qian reset full spectrum fill light lamp is can according to current self-timer of environment light to control lights strength of, maybe this also can brings better of self-timer experience, on this aspects, also have waiting for really machine hand to know does. YSL iPhone 5 Case
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