鏡頭對焦測試卡簡介
鏡頭對焦測試卡YE0110用于測試鏡頭的整體對焦，調整鏡頭，檢查鏡頭各區后焦及分辨率。測試卡由9個扇形星組成，在圖像各個區域均勻分布。扇形星的中間白色部分是外徑的10%。在扇形星內有兩個圓形線條，內層圖形是一個625線的結構，較大圓線是312線結構。
The test chart consists of 9 sector stars, distributed equally over the picture area. The unresolved center of the sector star is 10% of its outer diameter. Within the sector stars are two circular lines. The inner one marks a 625 line structure, the larger circular line marks a structure of 312 lines.
The test chart is designed for
adjustment of camera lenses
checking back focal distance
checking resolution over the picture area
