...跟 Minolta DiMAGE Z1 一样配备了 Hybrid AF 设计,结合了被动相位侦测(Phase Detection)及镜间对比侦测(Contrast Detection),在较暗环境下都可以准确将一般距离景物对焦,只有在近摄对焦时才会花多一点时间。
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现时主流的自动对焦模式,都是对比检测 (contrast detection) 或相位检测测 (phase detection),前者主要用于小 DC 或无反相机上,后者则主要用于单镜反光相机,亦会有两者的混合式。
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TTL contrast detection 自动对焦情况
infrared contrast detection 红外检测
contrast detection threshold 对比度觉察阈值
infrared contrast detection unit 红外线探测头
infrared contrast detection diode 红外探测二极管
infrared contrast detection system 红外探测系统
High-Contrast Imaging for Exo-Planet Detection 外星际探测高对比度成象
The contrast detection thresholds of the Chinese were measured for monocular and binocular viewing, and the satisfactory results are obtained.
测定了中国人单眼和双眼的对比察觉阈值,取得了满意的实验结果。
"Our study shows that contrast against the background, rather than color per se, may be more important for object detection by sharks," study co-author Hart said in a statement.
“我们的研究显示,与背景色之间的差别,而不是颜色本身,才是鲨鱼探测目标的更重要依据。”研究者之一哈特在一份声明中说。
By contrast, 14% of those with two functional copies of the gene were over the detection threshold before they had even received an injection.
相反,携带该基因的两种活跃副本的人中,14%的人在注射前就已经显示超过检测标准。
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