visible spectrum
the region of the electromagnetic spectrum between 380 and 720 nanometers.
Visible Spectrum see Spectrum
Volts (v)
A measure of electrical "pressure." Formula: volts = watts ÷ amps. Tip: To save bucks and save face, check lamp-voltages before plugging in; and check overseas voltages before grabbing your passport.
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Visible spectrum
The electromagnetic spectrum of visible light; red, orange, yellow, green, blue, indigo, violet.
Warm colours
Are any colour which, by association suggest warmth, such as red, orange and yellow.
The Visible spectrum consists of billions of colors, a monitor can display millions, a high quality printer is only capable of producing thousands, and older computer systems may be limited to 216 cross-platform colors.
Figure 4: Visible Spectrum and Color
Within the range of wavelengths that the human eye can detect, the eye and brain associate different colors with different wavelengths. This is illustrated in Figure 4.
The "traditional" visible spectrum runs from red to violet. Red light has the longest wavelength and violet the shortest.
Like monitors, printing inks also produce a colour gamut that is only a subset of the visible spectrum, although the range is not the same for both.
Light balancing filters affect the entire visible spectrum of tungsten light and provide an adjustment from one Kelvin temperature to another.
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum.
The average of this response across the visible spectrum determines the color we perceive. The phenomenon wherein two objects with different spectral responses both average out to be the same visible color is known as metamerism.
IR Infra Red Light is a frequency of light which is lower than the human eye's visible spectrum (in the range of 850 ~ 950 nanometers). Color cameras CANNOT use infrared light whatsoever.
Usually, the visible spectrum is hidden unless refracted by prism or a rainbow (simply many thousands of water droplets acting as prisms).
Additive Color System: Means of producing an image by combining red, green and blue light, which are each approximately one-third of the visible spectrum.
The ultra violet ray. This is beyond the visible spectrum i.e. it's invisible electromagnetic radiation of the sunlight. UV lenses is very expensive, only Nikon has a offering in its Nikkor lens line.
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The cadillac of monitor profiling solutions use a spectrophotometer to measure not just red, green and blue from the monitor, but actually record the distribution of light emitted over the entire visible spectrum.
Lenses that use internal elements to bring all colors of the visible spectrum to a common point of focus, creating a sharp image and minimizing chromatic aberrations, are referred to as APO lenses.
Black and white is sensitive to most of the visible spectrum of light (panchromatic), along with some ultraviolet. It is more sensitive to blues, which means skies tend to get overexposed.
Infrared ...
APO:
Apochromatic. Having the ability to bring all colours of the visible spectrum to a common plane of focus, within close tolerances, usually refer to a lens with such superior colour correction. Also refer to "ED", "LD", "SD","UD".
A wavelength of the laser light is 800nm* in the visible spectrum and is output as a pulse for the extremely short interval of only 100 fs (one fs is 1/1000th of a trillionth of a second).
A light source that contains a mixture of all wavelengths of the visible spectrum.
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Uses the flash to illuminate your subject that would otherwise be silhouetted by strong light from behind.
I used the Hoya R72 filter on my D70r, which still lets a part of the visible spectrum to pass, that corresponding to the red region. This allows the capture of images with different colors.
-Panchromatic - photographic emulsion sensitive to all the colors of the visible spectrum and to a certain amount of ultra-violet light. The sensitivity is not uniform throughout the spectrum.
Beyond violet. That part of the electromagnetic spectrum which lies beyond the violet end of the visible spectrum, i.e. of shorter wavelength than violet, and invisible to humans.
USM
Unsharp Mask. A process used to sharpen images ...
RGB
The way that the colours are recorded in Digital imaging. A large percentage of the visible spectrum can be represented by mixing Red, Green and Blue coloured light in various proportions and intensities.
(see CMYK) ...
Infrared Photography Refers to taking pictures in light beyond the visible spectrum. Inkjet A printer that places ink on the paper by spraying droplets through tiny nozzles.
Panchromatic film
Black & white film that is sensitive to all colours of the visible spectrum.
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When the flash fires, the module sends a digitally encoded optical signal (of a blended frequency not in the visible spectrum) that can only be read by auxiliary slave-equipped Metz flash units used in the lighting setup.
By repeating the experiment with different reference colors chosen form the visible spectrum it was possible to come up with mathematical descriptions of all the colors of the spectrum based on the relative amounts of R, ...
 See also: Spectrum, Light, Photograph, Image, Camera
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