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Edge-based Frequency Response Test Pattern

Applied Image Inc.Request Info
 
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The QA-100 ISO 12233:2023 Low Contrast Edge SFR chart from Applied Image Inc. is a test pattern that measures an electronic still camera’s edge-based frequency response (e-SFR).

The slanted star test pattern replaces the slanted squares used in the earlier editions of ISO 12233 but uses the same 4:1 reflectance ratio for comparison with results. It features 1× size, 340 × 240-mm photographic material, framing arrows that define 4:3 and 3:2 aspect ratios for framing the target's active area, a central multifrequency zone plate to set focus, and spectrally neutral gray scale patches with a 20:1 luminance ratio used to determine optoelectronic conversion functions. In addition, proprietary ACCUEDGE® manufacturing technology achieves sharp line edges.

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Vision-Spectra.com
May 2023
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