When placed off-axis, the chart will have segments that cover sagittal and tangential directions in addition to vertical and horizontal directions. Since the Imatest Star module analysis is extremely noise-resistant, measurements are highly repeatable. Siemens star MTF20 (the spatial frequency where MTF is 20% of its low frequency value) is a good estimate of limiting resolution.

Kisscc0 does not represent or warrant that such consent or permission has been obtained and expressly disclaims any liability.The Sinusoidal Siemens Star test chart allows you to measure MTF and limiting resolution with a chart that provides angular response and may be less affected by signal processing (especially sharpening) than slanted-edges. And may require third party consent or permission for these rights - especially for commercial applications. Please note that although all images are free for commercial and non-commercial use, the items depicted in the images (such as identifiable characters, logos, brands, etc.) may be subject to other copyrights, property rights, privacy rights, trademarks, etc. Don't file any of the materials for trademark registrations like as logos since other designers including KISSCC0 won't be able to use them. Don't use images with identifiable brands to create a misleading association with a product or service. sell an exact copy of a stock photo as a poster, print or on a physical product.

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Siemens star test chart