全息与摄影的区别

全息和摄影是生成图像的两种不同技术。

全息：
它是用于利用光的干涉和衍射现象生成 3 维图像的技术。它使用单色和相干光源，需要全息图来重新生成图像。

摄影：
它是用于生成 3 维对象的 2 维图像的技术。在这种光线从物体反射到照相胶片上并与胶片的化学涂层发生反应。需要一个镜头将物体聚焦在照相底片上。

全息和摄影的区别：

S.NO	Holography	Photography
1.	Holography is used to generate 3-dimensional images.	Photography is used to generate 2-dimensional images.
2.	Phenomenon used in holography is interference and diffraction of light.	It uses reflection of light by the object to the photographic film.
3.	Source of light should be monochromatic and coherent.	No special type of light source is needed.
4.	No lens are required to generate the holograph.	Lens are required to focus on the object and generate the photograph.
5.	Holography has high information capacity.	Photography has less information capacity than holography.
6.	Multiple images can be superimposed together.	Multiple images can’t be superimposed together.