8 Difference Between Holography And Photography

SHARE

What Is Holography?

Holography is the science and practice of making holograms. A hologram on the other hand, is a physical structure that uses light diffraction to make an image. A holographic image can be seen by looking into an illuminated holographic print or by shinning a laser through a hologram and projecting the image onto a screen.

Holography is based on the principle of interference. A hologram captures the interference pattern between two or more beams of coherent light (i.e laser light). One beam is shone directly on the recording medium and acts as a reference to the light scattered from the illuminated scene.  

What You Need To Know About Holography

  1. In holography, both intensity as well as phase of light wave is recorded, thus holography gives three dimensional picture of the object.
  2. Holography requires a monochromatic, coherent light source e.g laser light.
  3. When recording a holography, the light from the object is scattered directly onto the recording medium.
  4. If the hologram is broken into parts, each part is capable of reconstructing the entire object.
  5. Several images can be recorded on hologram at the same time.
  6. Information capacity of the hologram is larger than that of a photograph.
  7. Multiple images can be superimposed together in holography.
  8. Hologram produced by holography is a positive pattern.

What Is Photography?

Photography is the art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light-sensitive material such as photographic film.

What You Need To Know About Photography

  1. In photography, only intensity is recorded therefore photography produces two dimensional picture of the object.
  2. A photograph can be recorded using normal light sources such as sunlight etc.
  3. A lens is required in photography to record the image.
  4. In photography, the destruction of even very small portion of negative or photography results in an irrecoverable loss of information.
  5. In photography, a single photo film cannot record several images at the same time.
  6. Photograph has less information capacity than holography.
  7. Multiple images cannot be superimposed together.
  8. In conventional photography, a negative pattern is produced on the film.

Also Read: Difference Between Quantization And Sampling In Digital Image Processing

Difference Between Holography And Photography In Tabular Form

BASIS OF COMPARISON HOLOGRAPHY PHOTOGRAPHY
Picture In holography, both intensity as well as phase of light wave is recorded, thus holography gives three dimensional picture of the object.   In photography, only intensity is recorded therefore photography produces two dimensional picture of the object.  
Light Source Holography requires a monochromatic, coherent light source e.g laser light.   A photograph can be recorded using normal light sources such as sunlight etc.  
Recording Image When recording a holography, the light from the object is scattered directly onto the recording medium.   A lens is required in photography to record the image.  
Destruction On The Negative If the hologram is broken into parts, each part is capable of reconstructing the entire object.   In photography, the destruction of even very small portion of negative or photography results in an irrecoverable loss of information.  
Capability Several images can be recorded on hologram at the same time.   In photography, a single photo film cannot record several images at the same time.  
Information Capacity Information capacity of the hologram is larger than that of a photograph.   Photograph has less information capacity than holography.  
Multiple Images Multiple images can be superimposed together in holography.   Multiple images cannot be superimposed together.  
Pattern Hologram produced by holography is a positive pattern.   In conventional photography, a negative pattern is produced on the film.  

Also Read: Difference Between Optical Character Recognition (OCR) And Magnetic Ink Character Recognition (MICR) 

1 COMMENT

LEAVE A REPLY

Please enter your comment!
Please enter your name here