推荐回答(2个)
经过一段时间的使用,数码单反相机的感应器上难免会沾染一些灰尘。当图像感应器上粘有灰尘或其他物质时,在图像中可能会造成黑色斑点。焦点采用手动选择无限远或对焦于云团等易于合焦的部分
图像感应器上如果附着有灰尘,附着灰尘的部分将不会被曝光,在图像内会显示为黑点。采用广角镜头时会更加明显,如果缩小光圈,甚至连灰尘的形状都能够看清楚。利用这一特征,我们可以尽早发现难以注意到的灰尘。如图所示,用广角镜头或变焦镜头的广角端拍摄天空,拍摄时将光圈收缩至最小,就能够检查出是否存在灰尘了。为了避免这种情况,请按照以下步骤清洁图像感应器。要注意以下问题:
一、自动清洁。以佳能为例:
1. 将电源开关设为 。
2. 按下 按钮以便弹出菜单显示。
3. 在 [设置] 选项卡下,选择 [清洁感应器],然后按下 按钮。
4. 出现下面的屏幕。选择 [立即清洁],然后按下 按钮。对于 EOS DIGITAL REBEL XTi/EOS 400D DIGITAL,转到步骤5。
5. 选择 [确定],然后按下 按钮。
屏幕中将指示正在清洁感应器。尽管有快门音,但是不会拍摄照片。
如果有些顽固灰尘使用上述方法不能除去,必须进行手动清洁感应器。
二、手动清洁感应器
图像感应器是非常精密的部件。如果可能,应将其送至服务中心进行清洁。 这里介绍如何自己来清洁图像感应器。详细内容,请参阅照相机附带的说明手册。
注意1:使用交流电适配器套件ACK-E2 (单独出售) 或者充满电的电池以避免在清洁感应器的过程中电源中断。
注意2:在清洁感应器的过程中,切勿做以下任何将会关闭电源的操作。如果电源中断,快门会关闭,这样可能会损坏快门帘幕和图像感应器。
1) 切勿将电源开关切换至。
2) 切勿打开存储卡插槽盖。
3) 切勿取出电池。
1. 取下相机的镜头。
2. 插入交流电适配器附带的直流电连接器或者将充满电的电池插入电池仓中。
3. 将电源开关设为,并按按钮以显示菜单窗口。
4. 从以下图像显示的菜单中选择下列内容:
必须开启相机专用的“手动清洁感应器”模式(不同品牌相机的叫法有所差别),绝对不可以使用“B门”模式。
虽然用“B门”模式也可以使反光板上升、快门开启,将感应器露出,但此时的感应器处于通电工作状态
使用专业的清洁工具,但是不建议新手自己动手,建议去该机型的厂家售后清洁,因为自己动手容易造成划痕
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