佳能（Canon）EF 100-400mm f/4.5-5.6L IS II USM 单反镜头远摄变焦镜头

价格： Our Price 16499.00 L1
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规格参数

主体
国补备案型号	EF 100-400mm f/4.5-5.6L IS II USM
型号	EF 100-400mm f/4.5-5.6L IS II USM
防抖	支持防抖
规格
焦距	100-400mm
自动对焦马达	支持自动对焦
AF/MF切换	支持

包装清单

EF 100-400mm f/4.5-5.6L IS II USM镜头×1,佳能镜头遮光罩ET-83D×1,佳能镜头软包LZ1326×1,佳能镜头盖E-77 II×1,佳能镜头后盖×1

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<div class="ssd-module-heading-layout"><span class="ssd-widget-heading-ch W15046774830872" >产品信息</span><span class="ssd-widget-heading-en W15046774830873" >Product Information</span></div>
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    >
      MTF曲线图显示的是镜头对对比度的忠实再现情况，纵轴表示对比度的优劣，横轴表示与成像中心的距离。另外，图中10线/毫米的曲线越接近1（极限值）镜头的对比度表现就越好。另一方面，30线/毫米的曲线越接近1，镜头分辨力就越高。“线/毫米”这一单位的意思是，以1毫米宽度为单位，其中有多少根白/黑/白/黑的条纹。比方说，10线/毫米的意思可以理解为在1毫米宽度的范围内排列有10条线。MTF值的测试需要拍摄按照上述方式描绘的图表。然后测量拍摄结果进行分析得出数值。如果是变焦镜头要分别测量远摄端和广角端的MTF值，根据所得数值可以大概掌握镜头性能。

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      根据线的高度、形状及间隔 了解镜头特点与性能 MTF曲线图的横轴相当于成像圈半径，横轴左端相当于成像中心，右端相当于成像圈圆周外端。对比图表左右部分，更易了解镜头中心开始各个方向上的成像性能。另外，EF镜头安装在APS-C画幅机型上时等于截取成像圈中央部分，原来图像边缘为实际拍摄范围之外，因此横轴左端向右约11毫米范围外的数据可以忽略。

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<div class="ssd-module-heading-layout"><span class="ssd-widget-heading-ch W16087189378891" >样张欣赏</span><span class="ssd-widget-heading-en W16087189378892" >Sample appreciation</span></div>
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      快门速度：1/1250秒   ,  光圈值：f/11

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      快门速度：1/2000秒   ,  光圈值：f/5

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      快门速度：1/125秒   ,  光圈值：f/16

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      快门速度：1/320秒   ,  光圈值：f/5

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      快门速度：1/400秒   ,  光圈值：f/11

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      快门速度：1/5秒   ,  光圈值：f/8

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