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Scanner Dynamic Range Chart YE0240
- SCANNER DYNAMIC RANGE CHART (ISO 21550) 200:1 The YE0240 is designed to check the 35 mm-scanner dynamic range. It has 24 graypatches with a density range of 4.0 or 6.0. The reflective version consists of a 2.4 density range. The YE0240 D is
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SCANNER DYNAMIC RANGE CHART (ISO 21550) 200:1
The YE0240 is designed to check the 35 mm-scanner dynamic range. It has 24 graypatches with a density range of 4.0 or 6.0. The reflective version consists of a 2.4 density range.
The YE0240 D is designed to determine the dynamic range and the scanner opto electronic conversion function (OECF). The OECF describes how the scanner transforms luminance values of the object into digital code values in the digital image.The OECF is typically measured from a gray scale.
The specification of YE0240 D is derived from ISO 21550.
The test chart contains a neutral gray scale with 24 patches. The patches are arranged from highest density in the top left corner to lowest density in the bottom right corner.
In order to measure a scanner, the contrast of the chart should exceed the dynamic range of the camera under test. The TE240 D is therefore available in the contrast ranges 10.000:1 and 1.000.000:1.
Fiducial marks in the corners of the target can be used for automated analysis of the patches.
Scanner Dynamic Range Chart