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I was unable to find a description of how the blanking periods worked in System 3. However, frustratingly, despite being the main citation, System 3 is not the CBS color system that was adopted in 1951! The first citation I could find proving this was this 1951 Radio and Television News article, transcribed here. But yes, this was a 144Hz system! Presumably that adjustment was made after 1942.
，这一点在新收录的资料中也有详细论述
有用。但不是你以为的那种用法。
Written By BasicAppleGuy
Adobe全家桶Express处理后成片，白平衡严重漂黄夜景更是Arrows N翻车的重灾区，在自动模式下对焦拉风箱严重，经过多次测试仍然无法准确判定焦点到底锁到了什么东西上；另一方面测光也极不准确，距离十米不到的灯牌都无法压制高光，HDR像是十五年前索尼CCD的水准。除此之外在面对复杂光源时，骁龙695孱弱的ISP难以承担巨大的曝光还原计算，使得整个画面放大后充斥着难以忽视的丑陋彩噪。在夜晚想要拍出正常的照片几乎只能寄希望于专业模式，但Arrows N的相机界面仅能对EV、ISO、白平衡、对焦距离进行调节，且ISO最低只有100，在ISO最低仍然面对光源过曝的惨状之下只能选择手动-1 EV，才能得到比较贴近肉眼观感照度的成片，但又只能忍受手动模式下可感的偏色。不过能让人些许宽慰的是，手动模式下选好白平衡模式不会出现彩噪，也不会有猎奇的白平衡漂移。我自诩阅机无数，但也是第一次见到加了算法还不如不加的机器。