Holography is a technique to generate 3-dimensional images using interference and diffraction of light. It uses a coherent and monochromatic source of light. A hologram is needed to regenerate an image.
Photography is a technique to generate 2-dimensional images of 3-dimensional objects. A reflecting light after striking the object reacts with the chemical coating of the film. A lens is required to focus the object on the photographic plate.
Following are the important differences between Holography and Photography.
|1||Concept||Holography is a technique to generate 3-dimensional images.||Photography is a technique to generate 2-dimensional images.|
|2||Phenomenon||Interference and diffraction of light is used in holography.||Reflection of light is used in photography.|
|3||Requirement||A coherent and monochramatic light is needed.||No specific light need.|
|4||Lens||No lens is needed.||Lens is required to focus an object on the plate.|
|5||Information Capacity||Information Capacity is high.||Information Capacity is less as compared to holography.|
|6||Superimposition||Multiple images can be superimposed onto each other.||Multiple images can't be superimposed.|