Imatest software uses test charts to measure the quality factors of your imaging system. Charts come in a range of sizes and substrates, and you can use the Imatest Chart Finder to determine the size of your imaging plane and help select the chart(s) you need. For additional information, see Test Chart Substrate and Sizing Guide as well as our introductory video How to Select Test Charts.
When handling a test chart, always ware clean, white cotton gloves to keep it free from blemishes and dirt, and be careful not to drop or fold the chart.