Language
Chinese English español Italiano Japanese coreano Россия
Home>Main Instruments>Test Charts>SFRPlus Test Charts

Standard SFRplus Chart

Standard SFRplus Chart Instructions Operating Manual Standard SFRplus Chart PDF
This Standard SFRplus Chart Instrument are Certified with
certify
1 Years Warranty (Additional support period of 3 years)

The SFRplus test chart can be used with the SFRplus module in Imatest 3.2 or later to measure MTF, lateral chromatic aberration, distortion, tonal response, and color accuracy. The SFRplus module features fully automated region-of-interest detection. The SFRplus chart offers significant advantages over commonly used charts such as the ISO 12233 chart, including 1) much less wasted area, 2) the ability to produce a map of sharpness over the sensor surface, 3) better measurement accuracy due to the lower contrast, and 4) full support for automated testing.

This chart is recommended for most standard testing setups and devices. Choose a size based on your sensor and setup limitations.


Options include:

  • Grid: 5x9 grids are recommended for for typical DSLR formats with aspect ratios of 3:2
  • Paper Size and Active Area Options

    This chart is available in three sizes. It is recommended that the medium sized charts be used to test imaging systems with sensors up to 12 MP, the large charts be used for testing of sensors up to approximately 24 MP, and the extra-large charts be used for sensor sizes above 24 MP.

    Paper Size (Including Margin)

      5x9
    Medium 24
    Large 44
    X-Large 44

    Active Area

    The active area of the chart includes white space above and below the top and bottom distortion bars. It is slightly larger than the printed area, which is bounded by the distortion bars on top and bottom. White space is included in active area because test images of the chart must include this white space in order to enable automated processing in SFRplus software.

      5x9
    Medium 22
    Large 33
    X-Large 42
  • Paper/ink type: Matte paper/ink can be used to reduce reflected light and allow for easier lighting setups
  • Contrast levels: 4:1 contrast ratio for new ISO standard compliance
  • Color chart: a 20 patch color chart.

Our Valued Clients

  • our customer sunny optical
  • our customer lenovo
  • our customer oppo
  • our customer o film
  • our customer Largan Precision
  • our customer q tech smart vision
  • our customer Truly Opto Electronics
  • our customer TRANSSION

FAQs About  SFRPlus Test Charts

A colorimeter is sufficient for basic, routine color checks, while a spectrophotometer is needed for precise, comprehensive color analysis—here’s the clear breakdown:

When a Colorimeter is Sufficient

  1. Simple color matching needs: Ideal for checking if a sample matches a predefined standard (e.g., basic paint batches, plastic parts with solid colors).

  2. Consistent lighting conditions: Works well when measurements are done under fixed, standard light sources (no need to account for varied light effects).

  3. Cost-sensitive, high-volume tasks: Perfect for production lines requiring fast, low-cost color checks without advanced data analysis.

When to Use a Spectrophotometer

  1. Precise color quantification: Necessary for measuring Lab values (lightness, red-green, yellow-blue axes) or detecting subtle color deviations (critical for automotive coatings, high-end textiles).

  2. Complex color analysis: Required for metallic/pearlescent finishes, transparent materials, or samples with gloss/texture variations.

  3. Compliance and documentation: Essential when precise color data (spectral curves) is needed for quality audits, regulatory compliance, or brand color standardization.


Make sure the light sources are calibrated, keep extraneous light sources away, have the correct viewing angles, and handle the samples in a clean and uniform manner.


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.

Gloss is the general reflectivity of a surface, which encompasses a variety of degrees. One particular type of finish is high gloss, which has the maximum shine and reflectance. It increases the richness but emphasizes flaws as compared to satin or matte.


The gloss meter is used to measure the gloss level: it is a device that directs the light at a fixed angle and reads the intensity of the reflected light. The angles, such as 60°, 20°, or 85°, are applied depending on the type of surface and the range of gloss.


Replace when the total hours exceed rated life, decrease in brightness, or the color temperature shifts beyond tolerance.


Related SFRPlus Test Charts You May Also Like

Copyright ©1998 - 2026 Guangdong Threenh Technology Co.,Ltd. Privacy Policy

Give us a call!

Discuss your project with one of our product specialists:

0086 755 26508999

Need pricing?

We respond to quote requests within 1 business day.

service@3nh.com

Already know what you need?

Submit a demo request for the product you're interested in.

Get a Demo
Leave Your Message
We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it. Privacy policy