Computer Digital Photography

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A Brief History of Digital Photography

The invention of digital photography required the realization of an optical device allowing the creation of the image and finding a way to fix this picture on a durable medium by a chemical process irreversible.

The two phenomena needed to obtain a photograph had long been known for some, including the effect of light on silver chloride.

Jacques Charles in 1780 and had managed to freeze so fleeting silhouette on paper soaked in silver chloride by the method of the darkroom.

Around 1826, Joseph Ni?pce manages to fix quality images average plates pewter coated with bitumen of Judea (a type of natural tar having the property of hardening in the light). This First "picture" has necessitated a break of several hours.

The official date of the invention of digital photography is 1839: Francois Arago presented at the Academy of Sciences of the daguerreotype, an improvement of the invention due to Niepce Louis Jacques Mande Daguerre, which reduces the exposure time in half an hour .

Even if these images could be produced only a single copy for both a result of a random quality, the long history of digital photography is running.


Technical developments


During the history of digital photography, technological advances will reduce the exposure time (by increasing the speed sensitive surfaces and light of the objectives), improving the stability of the resulting image and a simplified application of this technique.

The devices become both more light and less expensive, the development will be facilitated by advances in chemistry, before being upset by the introduction of the computer which allows the digitization of the image .


The invention of the negative


It is to William Henry Fox Talbot (1800-1877) that we owe the invention in 1840 of "calotype", a negative-positive process that allows multiple scattering images.

Various methods will succeed in the second half of the nineteenth century and improve image quality, sensitivity to light sensitive surfaces and simplify the shooting.

While the first photographs were made on glass plates bulky, heavy and fragile, in 1884, George Eastman invents flexible sensitive surfaces and the film celluloid. This milestone in the history of digital photography will be used to store multiple images in the camera.


Color digital photography


Another milestone in the history of digital photography, the first truly practical method of color digital photography appears in the early twentieth century.

This is autochrome, invented by the Lumiere Brothers in 1903 and commercialized since 1907, with support for the glass plate.

It was not until 1935 that color digital photography is spreading with compact cameras with the first color film, Kodachrome and the Agfacolor.

The success of large-scale digital photography depended on the possibility of drawing on paper, an innovation that allows Kodacolor that spreads widely in the 1950 format 135.


The small size


In 1913 Oskar Barnack built the first prototype of the Leica, which was produced and commercialized since 1925. This device was the first to use the 24 ? 36, a crucial innovation in the history of digital photography.

Previously, the format of negative images was at least 4.5 ? 6 cm and more often than 6 ? 9 cm and over, so it was difficult to arrange on the same film more than a dozen views.

The use of 35mm film with pictures of 24 ? 36 mm to triple the range of a movie. The 24 ? 36 becomes the standard most used in practice both amateur and professional digital photography until the late twentieth century.


The Polaroid


The Polaroid instant-first device, was developed around 1948 by Edwin Land, then adapted the color photo in 1962.

All current photographic processes by silver image are merely refinements of these inventions that have marked the history of digital photography.


Digital photography


With the twenty-first century, the history of digital photography into the digital age: computer skills can transform an image into a series of points, pixels. The sensitive film is replaced by electronic sensors of the image.

This technology marks a complete break with the physical and chemical processes that were at the origin of the photographic technique.

The resolution of these sensors (the number of pixels they are able to analyze) is changing very rapidly and technological change seems to condemn the technique silver does exist in the form of artistic expression.

About the Author

This article touched the basics of the topic. I have 2 more resources related to the above. They are
history of digital photography
and my own blog
photography basics
. Do consider reading them.

China Great Wall Computer - LCD PC monitors digital photo frames AC/DC adapters Laptops Switching


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computer digital photography5
computer digital photography5

Computer Digital Photography

1

Wonders of Digital Photography

Digital photography enables people to manipulate the captured images with the help of computer techniques. It is a vast subject having lots of developments and innovation. With the use of modern techniques in digital photography, many people having talent for photography have been attracted to adopt it as their hobby. A large number of people have adopted photography as their profession as well. The images that are captured by the digital cameras are saved in different file formats digitally. These can be later trimmed, refined and cropped accordingly. It is done as per the desire of the person and then prints are taken. With the help of digital photography, editing has been made easier. When it comes to make a comparison between the traditional and latest photography techniques, there can be many other advantages for people.        

In order to learn digital photography techniques, manuals and tutorials are available in the market for the use of people. It is a reality that whatever developments come in this field, the digital photography basics will remain the same. There are websites working for the people who want to learn digital photography.

If you want to catch impressive images then you should follow some simple techniques that vary situation to situation. For example, for a wildlife photographer, catching pictures of the animals would involve different procedures. On the other hand, the people who capture portraits will have to work accordingly. The basics like type of the lens used, focusing and distance, use of tripod camera, metering etc will remain more or less the same. Important factors other than these are pixels of the image caught, its sharpness, resolution, size, image noise, contrast, luminosity, picture posting and white balance.      

Many tutorials and short guides are available in the photography blogs for the beginners. These blogs briefly describe beneficial digital photography tips and techniques. These are very easy to be followed. If one wants to make photography as one's profession, then these tips and techniques should be enhanced properly. Another aspect that should be learnt in detail is the use of tools for editing, picture manipulations, image resizing etc. Since the invention of digital cameras, they are under process of many innovations. Since their inception, the whole system has been advanced in a way that images captured with the help of these cameras can be shared and sent to others through wireless means of communication. Afterwards, by using mobile phones or computers, these pictures can be sent anywhere around the globe. Gone are the days when people used to wait for weeks to get pictures from their loved ones. Nowadays, this time period of days has been reduced to minutes and seconds. Credit goes to the world of digital photography.

Efficiency of the images being caught by the camera depends upon the features like pixel count, lens quality, captured mode of the image etc. A good digital camera equipped with all the required accessories will surely lend hand to anyone who wants to be a professional photographer. Art of digital photography has boundless opportunities for a photographer.

About the Author

Mac smith is an author of picture9, One of the best photography site. He is writing articles on digital photography basics for photography website.

Digital photography on vintage computer equipment!


computer digital photography5
computer digital photography5