你的便携式摄像机应该具有这些基本特征：自动调焦、回放及变焦镜头。
Your camcorder should have these basic features: autofocus, playback facility, zoom lens.
这就意味着需要减少调焦。
一个滑动的按钮可以调焦。
它会调焦、调光圈和光闸速度。
The camera adjusts its focus, lens aperture, and shutter speed by itself.
首先，学习显微镜如何调焦。
比较贵的照相机有可调焦距。
以调焦的观点看，这意味着一座远山不过一臂之长。
From a focusing standpoint, this means that a distant mountain is now up at arm's length.
这种胶卷容许调焦误差。
只有由睫状肌收缩，短暂的近调焦使远距离得到松弛。
It wants to be relaxed for distance, with the ciliary muscle contracting only for brief periods of close focusing.
把相机固定于三脚架，预先对水缸内部调焦。
它没有手动调焦功能。
目的实现航空像机摄影高度自动测量和调焦。
Aim \ to realize automatic height measurement and focusing of aerial photographic camera.
每次充电8小时可以转换调焦设置两到三天。
Each eight-hour battery charge allows for two-to-three days of switching between focus Settings.
提出一种新的基于灰度分割的调焦评价函数。
A focusing evaluation function based on gray scale segmentation is proposed.
他找到双筒望远镜，然后调焦对准那艘船看。
这就形成恶性循环，近视加重，眼镜加深，调焦压力加重。
This sets up a vicious circle of increasing myopia, stronger glasses, and increased focusing stress.
这种控制晶体形状的调焦肌肉(睫状肌)，长期处于收缩状态。
The focusing muscle (ciliary muscle), which controls the shape of the lens, is thus in a constant state of contraction.
顶部上有一个电源按键，快门按键，镜头远近调焦键。
There's also a power button, shutter release, and zoom slider up top — all pretty standard stuff.
为此我们提出两种实现方法，偏心光束法和针孔调焦法。
Then give two feasible method, eccentricity beam method and double pinhole method.
意思是视力比理想的近一些，为了看得更清楚，眼睛尽力调焦到所有的远处物体。
That means that the eye is somewhat shorter than ideal, causing the eye to exert focusing effort at ALL distances in order to see clearly.
其右边的为标准色颜色，光学目镜具有光线调节和调焦能力，使用方便。
The right for the standard color, optical eyepiece with light regulation and focusing ability, easy to use.
准确有效的图像清晰度评价函数是采用数字图像处理技术实现自动调焦的关键。
The accuracy and efficiency of the sharpness function was a key to auto-focusing based on digital image processing technique.
与常见的自准调焦法相比，该方法在适用范围、调焦灵敏度等方面都有所改善。
Compared with common self-correct focusing, this method is improved in respects of applicable range and focusing sensitivity, etc.
为了提高在激光直写设备中光刻系统的写入精度，对光探头调焦系统进行了研究。
To improve the precision of the laser direct writing device, researches have been done for the focusing servo system.
在激光直接写入设备中需要有高分辨力的调焦伺服机构对光刻物镜进行调焦伺服。
The optical writing object lens of the laser direct writing device must be focused in spots by a focusing-servo mechanism.
对光学系统进行调焦和确定旋转工作台的中心对许多测量系统来说是一个共性问题。
To focus in optical system and to determine the center of rotary table are common problems in many measurement systems.
摄像机镜头的光圈、变焦、调焦控制速度可调，为精确调整摄像机镜头提供情报方便。
The aperture, zooming and focusing control speed of the camera can be adjusted, which provides facility for the precise adjustment of the camera lens.
给它装上胶卷，使用带自动调焦、自动闪光的变焦镜头，然后，当操作完毕时，回转胶卷。
It loads the film, has a zoom lens with autofocus, autoflash, and winds the film back when finished.
本文用几何光学描述了离轴探测调焦误差信号与系统参数的关系，并与实验结果进行了比较。
Characteristics of the defocusing error signals are expressed in the terms of an off-axial detection system by geometric optics. The results are compared with experiment.
本文用几何光学描述了离轴探测调焦误差信号与系统参数的关系，并与实验结果进行了比较。
Characteristics of the defocusing error signals are expressed in the terms of an off-axial detection system by geometric optics. The results are compared with experiment.
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