這張測試圖卡是專門做高分辨率測量的。
3對頻率從1到28.5線對每厘米的線條(黑色和白色)分布在白色背景上。這個模式在圖表上順時針方向轉動降低分辨率。
This chart is designed to do resolution measurements.
3 pairs of lines (black and white) with frequencies from 1 - 28.5 linepairs per centimeter are printed on a white background. The patterns are ordered clockwise in decreasing resolution on the chart.