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Digital camera

21 Aug 2013
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Sorry for posting so late, actually I was busy in developing the blog and learning new codes, but I hope that this post would make you happy and help you to forgive me.  



The Digital Camera



The word “photography” comes from Greek words which, combined, mean “to draw with
light” (from photos, or “light,” and graphis, or “drawing”). Photography is the technique of
recording fixed images on a light-sensitive surface. Digital cameras are based on the
principles of traditional photography, but, instead of fixing images on film coated with chemical
substances sensitive to light, they process the intensity of the light and store the data in digital
files. Modern digital cameras generally have multiple functions and are able to record sound and
video in addition to photographs.

The Digital System
The Sensor that Replaces Film
The CCD (charge-coupled device) is a group of small diodes sensitive to light
(photosites), which convert photons (light) into electrons (electric charges).


Binary system processing
To convert the electric charges of the
photosite (analog) to digital signals, the
camera uses a converter (ADC), which
assigns a binary value to each one of the
charges stored in the photosite, storing
them as pixels (points of color).

ADDITIVE MIXTURE
Each pixel is colored by mixing values of RGB.
Varying quantities of each of these colors can
reproduce almost any color of the visible
spectrum.



The value of each can vary from 0 (darkness)
to 255 (the greatest color intensity).

Resolution
is measured in PPIs, or pixels per square inch—
the number of pixels that can be captured by a
digital camera. This figure indicates the size and
quality of the image.

Compression and Storage

Once the image is digitized, a
microprocessor compresses the data in
memory as JPG or TIFF files.

Even mobiles are serving a good place in capturing images and videos, but still digital cameras are only option if your pretty serious in capturing pictures and their quality.
according to a survey during in 2006, it was found that 110 million number of digital cameras sold worldwide.




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Sorry for posting so late, actually I was busy in developing the blog and learning new codes, but I hope that this post would make you happy and help you to forgive me.   The Digital Camera The word “photography” comes from Greek words which, combined, mean “to draw with light” (from photos, or “light,” and graphis, or “drawing”). Photography is the technique of recording fixed images on a light-sensitive surface. Digital cameras are based on the principles of traditional photography, but, instead of fixing images on film coated with chemical substances sensitive to light, they process the intensity of the light and store the data in digital files. Modern digital cameras generally have multiple functions and are able to record sound and video in addition to photographs. The Digital System The Sensor that Replaces Film The CCD (charge-coupled device) is a group of small diodes sensitive to light (photosites), which convert photons (light) into electrons (electric charges). Binary system processing To convert the electric charges of the photosite (analog) to digital signals, the camera uses a converter (ADC), which assigns a binary value to each one of the charges stored in the photosite, storing them as pixels (points of color). ADDITIVE MIXTURE Each pixel is colored by mixing values of RGB. Varying quantities of each of these colors can reproduce almost any color of the visible spectrum. The value of each can vary from 0 (darkness) to 255 (the greatest color intensity). Resolution is measured in PPIs, or pixels per square inch— the number of pixels that can be captured by a digital camera. This figure indicates the size and quality of the image. Compression and Storage Once the image is digitized, a microprocessor compresses the data in memory as JPG or TIFF files. Even mobiles are serving a good place in capturing images and videos, but still digital cameras are only option if your pretty serious in capturing pictures and their quality. according to a survey during in 2006, it was found that 110 million number of digital cameras sold worldwide. Tweet