Photography has always been a part of our lives. He has helped to capture people precious memories - both good and evil. Over the years, equipment and techniques developed to form their own art photography. As technology continues to evolve, changing the landscape in which a professional photographer working his craft.
The digital camera is one of the most remarkable instances of this shift because it is so truly different from its predecessor. Conventional cameras depend entirely on chemical and mechanical processes -- you don't even need electricity to operate them. On the other hand, all digital cameras have a built-in computer and all of them record images electronically. (Wombell 2001)
The new approach has been enormously successful. Since film still provides better picture quality, digital cameras have not completely replaced conventional cameras. But, as digital imaging technology has improved, digital cameras have rapidly become more popular.
It is normally used as a system that uses components defined make use of binary or digital logic, be 1 or 0. If your instrument or device, a microcontroller or processor is in it, or if you can help save and run a software program even simple decision-making, means that the material you are using the benefits of digital technology. (Penny 2005)
Let's say you want to take a picture and e-mail it to a friend. To do this, you need the image to be represented in the language that computers recognize -- bits and bytes. Essentially, a digital image is just a long string of 1s and 0s that represent all the tiny colored dots -- or pixels -- that collectively make up the image. (For information on sampling and digital representations of data, see this explanation of the digitization of sound waves. Digitizing light waves works in a similar way.) If you want to get a picture into this form, you have two options:
You can take a photograph using a conventional film camera, process the film chemically, print it onto photographic paper and then use a digital scanner to sample the print (record the pattern of light as a series of pixel values).
You can directly sample the original light that bounces off your subject, immediately breaking that light pattern down into a series of pixel values -- in other words, you can use a digital camera. (Mitchell 2002)
Shortly before 1990, the Associated Press introduced the Leafax, a mobile computer system that photographers could take with them. The Leafax contained a scanner, a small 5-inch monitor, and phone connections to allow the digital images to be transmitted. All of this technology was permanently embedded into a metal case that was the size of a small suitcase. The machine could use either color or black and white film, both of which had to be calibrated by using a clear section of that film stock for the scanner to do the calibration before making your actual scans. (Scoblete 2005)
The Leafax also loved underexposed negatives; images that ...