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Standardized IT8 charts (also called IT8 targets) are made by several companies including Coloraid.de, FujiFilm, Kodak, LaserSoft Imaging. [2] Unlike ColorChecker charts, IT8 charts are supplied with measurement values and can be used to create ICC color profiles by software (e.g. for digital cameras) to create reproducible color management.
An IT8 calibration is done with what are called IT8 targets, which are defined by the IT8 standards. Example. Special targets, implementing the IT8.7/1 (transparent target) or IT8.7/2 (reflective target) standards, are needed for calibrating scanners. These targets consists of 24 grey fields and 264 color fields in 22 columns:
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An IT8.7 Target by LaserSoft Imaging. For creating a scanner profile it needs a target source, such as an IT8-target, an original with many small color fields, which was measured by the developer with a photometer. The scanner reads this original and compares the scanned color values with the target's reference values.
The ColorChecker Color Rendition Chart (often referred to by its original name, the Macbeth ColorChecker [1] or simply Macbeth chart [2]) is a color calibration target consisting of a cardboard-framed arrangement of 24 squares of painted samples.
Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... IT8 IT9 IT10 IT11 IT12 IT13 IT14 IT15 IT16 IT17 IT18 mm tolerance in μm
It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]
The baseline is then characterized by outputting ECI [18] or IT8.7/4 [19] test charts (samples of color patches), then the charts are scanned with a spectrophotometer to finally produce a color profile of the baseline. Over time, specific device performance (and other conditions) may vary.