• Keep in mind that changing focal length will require refocusing in most zoom lenses.

    要注意是,对于大多数变焦镜头来说,焦距改变了,重新对焦。

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  • The reason for this is that as we know, longer focal length lenses magnify the image, but they also magnify the camera shake.

    正如我们前面所学,更长的镜头焦距虽然放大图像同样增加镜头抖动

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  • Camera lenses have two general attributes: f-stop and focal length.

    照相机镜头两项一般属性f制光圈焦距

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  • Two lenses of focal length 10 cm have a combined focal length of 5 cm.

    两个焦距10厘米透镜形成的组合透镜焦距为5厘米。

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  • Focal length is one of the most important optical characteristic parameter of optical lenses and optical instruments.

    焦距光学透镜光学仪器重要光学特性参数

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  • The authors have reported two methods for measuring the efficient focal distance of the laser rod lenses.

    提出几种计算和测量激光负透镜等效焦距方法

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  • The compound microscope consists of two convex lenses with short focal length, the objective and eyepiece lenses, fitted at opposite ends of a tube.

    复合显微镜包括两个焦距凸透镜,即位于镜两端物镜目镜

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  • If you wish to photograph the moon retaining as much detail as possible with a minimum of cropping to fill the frame, you need lenses with a long focal length.

    如果拍摄月球保留尽可能多的细节最少种植构图镜头焦距

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  • An accurate method for measuring the focal lengths of the pulse pump-induced lenses in laser media is presented and discussed.

    提出脉冲激光工作物质热焦距精确测量方法,并对其进行了讨论。

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  • The course covers fundamental concepts that apply to any camera, such as focal length and camera position, and shows how to evaluate and shop for DSLR lenses.

    教程涵盖了适用任何相机基本概念比如镜头的焦距摄影机位置

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  • The course covers fundamental concepts that apply to any camera, such as focal length and camera position, and shows how to evaluate and shop for DSLR lenses.

    教程涵盖了适用任何相机基本概念比如镜头的焦距摄影机位置

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