These last two are applications most relate to colorimetry, whereas the former three apply to many other EMR domains. In domain of Colorsync Users, this tends to be optimised for reflective media, but such a distinction is application dependent.ĥ) Colorimeter, a device that reports tri-stimulus colorimetric (e.g, CIEXYZ) coordinates of spectra optimised under an assumption of RGB emissive media, i.e. This is about knowing not only the spectral distribution, but exactly how much power is being conveyed.Ĥ) Spectrophotometer, is an application of a spectrometer for evaluating spectral power distribution in range of visual sensation. But also could be about any range of EMR.ģ) Spectroradiometer - measurement of precise energy distributions across a spectra. This is classically about a prism, hot objects and the visible signatures of their elemental constituents. If it is used for photography it's literally called a Light Metre.Ģ) Spectrometer is a radiometer that can report spectral power distributions, e.g., the EMR contour of a spectra. Here's a more comprehensive overview of the different types of calibrators (paraphrased from the ColorSync mailing list!):ġ) Radiometer is a sort of light meter for some assumed spectrum could be any electro magnetic radiation (EMR). They're very good at print but not as good as colorimeters for monitors generally, as the commonly available models tend to have some difficulty reading deep shadows on monitors.Ī third type 'Spectrocolorimeter' - is something Datacolor came up with in their print calibrators. They have their own light source so can handle both light emitting devices like monitors and reflective materials like paper. Spectrophotometers - These measure the actual spectral wavelengths of light. Essentially these are like simple digital cameras with a sensor and some filters in front of the sensor to separate the different colours of light. They are generally the best (and most affordable) option for calibration monitors.
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