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ISO-14524 digital camera contrast chart

ISO-14524 digital camera contrast chart Instructions Operating Manual ISO-14524 digital camera contrast chart PDF
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Details

This Camera Contrast Chart conforms to International Standard ISO-14524, Photography - Electronic Still Picture Cameras - Methods for Measuring Opto-Electronic Conversion Functions (OECF). Nominal patch densities are 0.1, 0.2, 0.31, 0.43, 0.56, 0.7, 0.87, 1.05, 1.27, 1.53, 1.86, and 2.30. It is well suited for measuring noise as well as OECF (Opto Electronic Conversion Function).

 

Part No. Overall Size Material / Process
ISO-14524-IJ 483 mm × 304 mm Semi-gloss paper with ink jet printing
ST-52-RM 356 mm × 200 mm Reflective material with photographic printing

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FAQs About  ISO Test Charts

The LAB color space defines colors in a three-dimensional model: Lightness (L), red–green axis (a), and blue–yellow axis (b). It's a globally recognized standard supported by most modern color measuring devices. CIELAB is a standardized, device-independent system designed to map all visible colors that the human eye can perceive.

The LAB color space uses three values to define any color, each representing a specific dimension:


L (Lightness): Ranges from 0 to 100. It measures the brightness of the color, where 0 is pure black and 100 is pure white.
A (Red-Green Axis): Ranges from approximately -128 to +127. Positive values represent red tones, while negative values represent green tones.
B (Yellow-Blue Axis): Ranges from approximately -128 to +127. Positive values represent yellow tones, while negative values represent blue tones.


Many people might answer "with the human eye", but this is actually not comprehensive. The human eye cannot accurately distinguish the colors of similar objects. Furthermore, everyone's perception of color varies. Therefore, people have developed color measurement tools based on the CIE color system. 

Currently, there are two main types of commonly used colorimeters, as follows: 

Colorimeter - It is an ideal choice for quality control (QC) on production lines, used to detect color differences. 

Spectrophotometer - It is suitable for the development of color characteristics and color analysis in laboratories.

SCI&SCE are two method in the color measurement. SCI means Specular Component Include,SCE means Specular Component Exclude.

Under the method of SCE, only test diffuse refection and exclude specular reflection. In that way, the test result is similar to object color was observed by human eyes.

Under the method SCI, both the diffuse refection and specular reflection will be included. In that way, the value about the color is more objective. It will not effect by the environment condition.

When we choose the instrument, those elements should be taking into consideration.


In the study of chemical reactions, calorimetry deals with changes in heat (energy and enthalpy). Spectrophotometry is the measurement of the light absorbance or light transmittance to determine the concentration or color of a solution. The first one monitors the thermal processes, whereas the second one addresses the aspects of light and color.


Yes, 3nh has a wide sales and service network worldwide, we provide overseas service through our authorized distributors or service partners located in Western Europe, Northern and Southern America, and the Asia-Pacific. 


A haze meter is precise and accurate if the sample is clean, there is a light contamination, and the sample is condition.


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