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ISO-15739 digital camera noise test chart

ISO-15739 digital camera noise test chart Instructions Operating Manual ISO-15739 digital camera noise test chart PDF
This ISO-15739 digital camera noise test chart Instrument are Certified with
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Details

This 15-patch grayscale step chart has 12 of the patches in a somewhat elliptical arrangement on the periphery and three in an inside row. Nominal patch densities are 0.1, 0.19, 0.3, 0.41, 0.53, 0.66, 0.81, 0.97, 1.17, 1.39, 1.66, and 2.0 for the 12 peripheral patches and 0.77, 0.90, 1.05 for the three central patches. The relatively large patches are especially good for measuring noise. Supported by the Imatest Stepchart, Multicharts, and ColorTest modules. 

The standard size has an active area of 11.4x17.1 inches (290x434 mm),printed on 12x18 inch (305x457 mm) luster (semigloss) inkjet media.

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FAQs About  ISO Test Charts

Color evaluation will change based on how a sample is viewed.  A 45° viewing angle to the source is recommended to reduce shading and achieve consistent comparison.

An 80 gloss surface will reflect less light as compared to a 100 gloss surface. Both are said to be high gloss, although 100 GU (or higher) reflects almost as much as a mirror. The distinction can be slight in graphic terms, but major in specific uses.


During color evaluation, maintaining consistent light sources and viewing conditions is critical. Standard viewing conditions vary depending on the object being evaluated, including factors such as brightness, illumination angle, and observer position. Accurate evaluation can be achieved by establishing a proper environment that meets these requirements.

In development and production sites with extremely high color requirements, such as the automotive and cosmetics industries, accurately reproducing colors is essential. Color evaluation helps determine whether the color matches the intended image or target color. It is the process of measuring color, analyzing its characteristics, and evaluating how well it aligns with a specific target color. 

color measurement and color evaluation

Visual Color Evaluation

Color differences are compared visually using standard light sources or reference colors (such as color cards). This method allows color confirmation under conditions close to natural light, making it ideal for color inspection in design and production processes. 

Instrumental Color Evaluation

Measurements are performed using a spectrophotometer or colorimeter. This method eliminates the subjective influence of the operator and is widely used for product quality control and industrial applications, enabling scientific quantification of color.


Color evaluation is widely used across industries such as product development and quality control departments in manufacturing. 

Typical applications include: 

  • Automotive Industry

    Used for quality evaluation of automotive paint, exterior parts, and interior components.

  • Coatings & Materials Industry

    Used to maintain and manage color accuracy for coatings, plastics, glass products, and more.

  • Cosmetics Industry

    Used to verify color consistency in products such as lipsticks and foundations.

  • Molded Products (Resin & Plastics)

    Used to evaluate color difference and uniformity of surface effects in finished products.

  • Furniture & Building Materials Industry

    Used to ensure color consistency in materials such as wood and plywood. Food & Pharmaceutical Industry Used to assess color consistency of food packaging and color differences in pharmaceutical capsules.

Yes. Ultrasonic coating thickness gauges can pinpoint layers within a multi-coat system. Users can examine the separate thicknesses of a primer, base coat, and clear coat. In contrast, magnetic and eddy current gauges usually measure the overall thickness of the coating. 

Colorimeter vs Spectrophotometer for Textile QC 

For textile quality control, a spectrophotometer is always the better choice instead of a basic colorimeter.

Key Reasons

  1. Spectrophotometer captures full spectral data, handles dyed fabric, printed textiles, yarn, woven and knitted materials with complex color and texture.

  2. Supports SCI/SCE, metamerism test, fastness comparison and batch color consistency inspection.

  3. Higher accuracy and better inter-instrument agreement, perfect for factory mass production and customer color approval.

  4. Basic colorimeters only show simple color difference data, easily affected by fabric texture, rough surface and lighting, with poor stability for textiles.

3nh Recommended Models

  • TS7700 / TS8560: High-precision, ideal for textile lab QC, color matching and raw material incoming inspection.

  • NR60CP / NS800: Cost-effective option for daily production line routine color checking.


Because color perception depends on the following factors: 

Light source - For example, incandescent lamps emit orange light, while fluorescent lamps emit cool white light. Therefore, placing an object near different light sources will result in different perceived colors. 

Observed object - Different types of objects affect color perception differently. Examples include opaque objects, translucent objects, and transparent objects. 

Observer's position - Each observer will describe colors differently based on the position of their eyes. 

Different backgrounds - An object's color will appear duller against a light-colored background than against a dark-colored background. Different directions of light reflection from the object - Light reflected from different directions creates different color perceptions. This is particularly noticeable with metallic objects.

Different directions of light reflection from the object - Light reflected from different directions creates different color perceptions. This is particularly noticeable with metallic objects.

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