In1943, Carl Zeiss also developed a procedure to measure lens imagequality with so-called “MTF” curves (modulation transfer function), which numerous manufacturers today use for quality control.
1943年卡尔蔡司同样研发了一套利用MTF（调制传递函数）
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The Carl Zeiss optical lens brings added clarity, while the dual LED flash lets you take great pictures day or night.
卡尔蔡司光学镜头将带来清晰，而双LED闪光灯，可让你把美丽照片白天或晚上。
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In 1902, Carl Zeiss submitted a patent for what would eventually become the most famous photo lens of all time: the Tessar.