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  • 孔孔和接触

    Aperture refers to the size of the opening in the camera when a picture is taken. Many cameras have a setting that allows you to change the size of the opening.  This is often referred to as the a fraction f/8 or f/16. The smaller the bottom number the larger the opening. Here is an animation of what the aperture feature on a camera.
    ::Aperture 指的是照相机中拍摄照片时的打开大小。 许多相机有一个设置, 允许您更改打开的大小。 这通常被称为分数 f/8 或 f/16 。 开片底数越小。 这是相机上孔径特性的动画 。

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    an aperture is a hole or an opening through which light travels.
    ::a 孔径是灯光穿行的洞或开口。

    In photography, depth of field ( DOF ) is the distance between the closest and farthest objects in a scene that are in focus in an image. A camera can focus only one distance at a time, the decrease in sharpness is gradual on each side of the focused distance. Changing the aperture changes the depth of field . A smaller aperture will focus on a wider area that includes the background.
    ::在摄影中,字段深度(DOF)是图像中焦点场景中最接近和最远对象之间的距离。相机可以一次只聚焦一个距离,焦距两侧的锐度逐渐下降。改变孔径会改变字段的深度。小孔径会集中在包括背景在内的更大区域。

    The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry.
    ::地表深度内的面积似乎很尖锐,而地表深度前后的面积似乎模糊不清。

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    Aperture = f/4 Shutter speed =1/125 ISO 160
    ::Aperture = f/4 开关速度=1/125 ISO 160

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    Aperture = f/20 Shutter speed =1/250 ISO 160
    ::Aperture = f/20 开关速度=1/250 ISO 160

     Notice how different the two backgrounds look. With a short depth of field of f/4 (first picture) the background looks blurry and out of focus. It gives a nice soft effect.  This is called the bokeh effect. You can get this effect from large aperture openings of f2 to f6. If you want the background details to be in focus, use a smaller aperture of f/8 -22. This increases the depth of field and adds more details behind the scene.
    ::注意两种背景的不同外观。 F/4 (第一幅图片) 的外观范围很短, 背景看起来模糊, 没有焦点。 它带来一个不错的软效果 。 这叫做 bokeh 效果 。 您可以从 f2 的大型孔径开口到 f6 的 f2 到 f6 。 如果您想要使背景细节焦点集中, 请使用 F/8 - 22 的较小孔径。 这样会增加字段的深度, 并在幕后添加更多细节 。

    Aperture Priority is a semi-automatic mode used in cameras. It allows the photographer to select an aperture setting and let the camera to decide the shutter speed and ISO sensitivity for the correct exposure. This is also referred to as Aperture Priority Auto Exposure, A mode, AV mode (aperture-value mode), or semi-auto mode. It allows you to adjust the depth of field and the how much focus there is in the bacground of the picture.
    ::Aperture 优先度是一种在相机中使用的半自动模式。 它允许摄影师选择一个孔径设置, 并让相机决定屏蔽速度和对正确曝光的ISO 灵敏度。 这也被称为 Aperture 优先自动曝光、 A 模式、 AV 模式( 孔径值模式) 或半自动模式。 它允许您调整字段的深度和图片底部的焦点 。

    EXPLORE
    ::外 外 雇 外 雇

    See examples of pictures with different apertures at -
    ::参见不同孔径图片的示例 -- --

    Learn about aperture and depth of field at  Understanding Your Camera: Lens Aperture Demystified  from Martin Pot – Photography Blog:
    ::了解你的相机:从Martin Pot — 摄影博客中解密的镜头:

    Look at photo examples of depth of field at Meaning of Depth of Field from Second Picture:
    ::以照片为例,

    RECORD YOUR FINDINGS
    ::记录你的调查结果

    • Describe the resulting depth of field when using a wide-open aperture.
      ::描述在使用宽孔径时产生的字段深度。
    • Describe the resulting depth of field when using a small aperture.
      ::描述使用小孔径时所得出的字段深度 。