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You are here: Home » Image Resolution and Pixel Count in Digital Photography

By Abhishek Ghosh July 19, 2012 10:39 am Updated on July 19, 2012

Image Resolution and Pixel Count in Digital Photography

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Image Resolution and Pixel Count in Digital Photography is an important topic it is not really the optical system but the sensor which deteriorates the image. Image Resolution is the capacity of any defined optical system’s ability to show up two points residing closer as clearly as possible. Image Resolution of a given Optical system depends on many other influencing factors.

 

Image Resolution and Pixel Count in Digital Photography

 

Resolution and Image resolution typically used for the scientific instruments like a telescope or microscope, when Optical Systems and digital technology was not common to be used by the mass.  The spatial resolution is a measure of the fine detail of an image, for a given dimension. A raster image consists of pixels, in case of print, we can also define it centimeter or inch , the conjunction of these two data is expressed in number of pixels per unit length, this is spatial resolution or “density” of pixels is commonly just called resolution or Image Resolution. So the original terminology, image resolution has been deteriorated to less specific terminology.

 

Importance of Image Resolution and Pixel Count in Digital Photography

 

Image Resolution and Pixel Count in Digital Photography

 

The resolution of a digital image is expressed in PPI (pixels per inch) or PPP (Pixels Per Inch). The print resolution of a printer or capture of a scanner is determined by DPI (Dot Per Inch) or DPI (Dots Per Inch). Unlike digital images for print, computer screens has a pre-defined image to be shown as programmed without spatial resolution. Yet it speaks well of display resolution to a computer screen or television, which is expressed both in number of pixels : by rows or columns, not in pixels per inch.

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To avoid this confusion between display resolution and print resolution or capture, some prefer to use the single term “definition” for the amount of image pixels in case of computer screens or televisions. Note also that metadata EXIF TIFF or JFIF and most operating systems and software professionals, including those from Adobe or Autodesk does not speak of “definition” but of “dimension” image.

 

The resolution at which an average human eye can not see the difference is 76 dpi at 1 meter distance. So logically the best image resolution should match with it. The size of print and display matters (so the image resolution) in case digital photography. The Optical System of a camera worked and works in the same way in case of Film camera or a Digital Camera. Unfortunately, the sensor of the camera is actually not an chemical compound like in case of film, so that we can increase its number of points to sense a point of an image (thereby the Image Resolution) to virtually infinite. So the size of print and display does matter in Image Resolution in case of digital photography.

 

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Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

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About This Article

Cite this article as: Abhishek Ghosh, "Image Resolution and Pixel Count in Digital Photography," in The Customize Windows, July 19, 2012, April 1, 2023, https://thecustomizewindows.com/2012/07/image-resolution-and-pixel-count-in-digital-photography/.

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