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【速搜问答】光学变焦和数码变焦的区别

问答 admin 2个月前 (04-05) 66次浏览 已收录 0个评论

汉英对照:
Chinese-English Translation:

主要区别是变焦的原理和照片的质量不同。光学变焦的原理是通过改变焦距的大小来改变图像的大小,数码变焦的原理是将一张已经固定的照片在进行放大。光学变焦的照片是原汁原味的,而数码变焦的照片是通过特殊处理的。

The main difference is the principle of zoom and the quality of photos. The principle of optical zoom is to change the size of the image by changing the focal length. The principle of digital zoom is to enlarge a fixed photo. The photo of optical zoom is original, while the photo of digital zoom is processed specially.

主要区别是变焦的原理和照片的质量不同。光学变焦的原理是通过改变焦距的大小来改变图像的大小,数码变焦的原理是将一张已经固定的照片在进行放大。光学变焦的照片是原汁原味的,而数码变焦的照片是通过特殊处理的。

The main difference is the principle of zoom and the quality of photos. The principle of optical zoom is to change the size of the image by changing the focal length. The principle of digital zoom is to enlarge a fixed photo. The photo of optical zoom is original, while the photo of digital zoom is processed specially.

现在人们的生活中到处都可以遇到相机,有手机相机,有数码,有单反,有航拍相机。在接触相机的时候也会接触到两个比较专业的词汇“数码变焦”和“光学变焦”。同样是变焦,两者有什么区别呢?

Now people can meet cameras everywhere in their lives. There are mobile cameras, digital cameras, SLR cameras and aerial cameras. When I touch the camera, I will also touch two professional words “digital zoom” and “optical zoom”. The same zoom, what’s the difference between the two?

变焦手段不同

Different zoom methods

光学变焦是通过物理光学手段来变焦的,也就是调整硬件的镜片间的距离实现的。而数码变焦是软件手段,在计算机上放大图片,一张图片一放大了就模糊,因此数码变焦没有实际意义。

Optical zoom is achieved by physical optical means, that is, adjusting the distance between the hardware lenses. Digital zoom is a software method. When a picture is magnified on a computer, it will be blurred as soon as it is magnified. Therefore, digital zoom has no practical significance.

照片质量不同

Different photo quality

光学变焦是真实的像素,它可以原汁原味地还原远处的景物,而不会有什么质量损失。

Optical zoom is a real pixel, it can restore the distant scenery without any quality loss.

而数码变焦是利用软件对已有像素周边的色彩进行判断,并根据周边的色彩情况插入经特殊算法加入的像素,所产生的照片是通过软件运算方式得到的。

The digital zoom uses software to judge the color around the existing pixels, and inserts the pixels added by special algorithm according to the surrounding color situation. The resulting photos are obtained by software operation.

光学变焦的原理就是通过改变焦距的大小来改变图像的大小,而且光学变焦只是改变了光线传输的距离,光线本身没有变化,所以照片质量不会发生变化。数码变焦最基本的原理就是将一张已经固定的照片在进行放大,因为数码照片是使用像素组成的,所以进行变焦之后只能看到一个个的小点或者小方块。

The principle of optical zoom is to change the size of the image by changing the focal length, and optical zoom only changes the transmission distance of the light, the light itself does not change, so the quality of the photo will not change. The basic principle of digital zoom is to enlarge a fixed photo. Because digital photos are composed of pixels, only small dots or squares can be seen after zooming.


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