RSS Feed

Category Archives: Travel and Tourism

A Brief History of Digital Photography

Photography, Pictures, Nature, Worldwide, Lenses, Camera, Photos, Memoirs

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.

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.

Advertisements

Seoul: A City of Distinction

city, Seoul, distinction, ancient houses, high-rise buildings, FX777222999, FX777,  beautiful, Asia-pacific
My Farewell to Seoul, originally uploaded by xoxoryan.

For foreigners, Seoul is an ancient city, as it was founded in 1392, 100 years before Christopher Columbus discovered the Americas. But when historians compare Seoul to Korea’s ancient history, the capital city of the Republic of Korea is relatively new. The city’s history only spans 500 years. Before the modern era, Seoul City was called Hanyang, and later Hansong.
The capital was chosen by General Yi Song-gye. He is known in history as King Yi Taejo as he was the first ruler of the Yi Dynasty. The official name of his kingdom, Choson, was the same as Korea’s first legendary kingdom founded by Tan-gun in the fourth millennium B.C. The name implies morning freshness or calm. Today many Westeners’ speak of the Yi Dynasty rather than the Choson Kingdom. The ancestral origin of the Yi royal family is Chonju City in Choila-buk-do Province.

The little village before it became the capital of Choson Kingdom was called Hanyang. It is not known when the word Seoul was first used for the capital city. Seoul is one of the few cities in Korea that cannot be written with Chinese characters. It is believed the this word originated from the early Shilla word of sorabol. This was the name given to the early capital and kingdom of Shilla founded in 57 B.C.

King Taejo started immediately to build a ten-mile fortress wall with nine gates around Hanyang (Seoul). Five of these city gates and some portions of the old wall have been restored as historic sites. The massive ten-foot city bell, the ringing of which opened and closed the city gates at sunset and sunrise, has been preserved. Now Seoul has spread far beyond the ancient stone wall that surrounded Taejo’s Hanyang.

Seoul’s special lure and charm are its ancient palaces with their traditionally classic and breathtaking architecture and gardens that represent a colorful but turbulent history.

These major attractions provide a glimpse into Korea’s past.

Located between rugged mountains, Seoul is a city of contrasts. The traffic rushing past modern skyscrapers, office buildings, and apartment complexes seems strangely out of place beside tile-roofed pavilions, shrines and gates that are centuries old.

The majestic gates to the south and east now sit in stoic contemplation in the swirling center of vehicular commotion. There are few cities in the world, much less capitals, where the very modern. And the ancient exist side by side in perfect harmony.

Onto Seoul’s past a heritage has been woven, which is evidenced by the palaces, shrines, gardens and monuments that still exist.

Kyongju: Museum Without Walls

kyongju, korea, museum, walls, ancient, structures, dwellings, houses, Fx777, FX777222999, beautiful
Bulguksa in Kyongju, originally uploaded by Snap Happy Dani.

Probably the most popular region to visit outside of Seoul is the Kyongju valley. Geographically, Kyongju is located between Taegu and Pusan along the route of the Seoul-Pusan Expressway in south-east Korea.

Kyongju is the cradle of early Shilla culture and site of the kingdom’s capital (57 A.D. 935) for almost 1000 years. The Unified Shilla period (668 – 935) carried Korean culture, arts and learning to unprecedented heights and today historians refer to this era as Korea’s “Golden Age.”

Royal tombs, temple sites with weathered stone pagoda and Buddhist images, as well as fortress ruins, are scattered within the vicinity of this ancient capital. Many of Korea’s most unique sculptured art objects of Korea’s early Buddhist heritage can be found well off the beaten trails.

Today Kyongju is called Korea’s “Culture City” or Museum without Walls.” Kyongju City, with a population of 100,000, still maintains the traditional Korean architectural style of housing, which is hard to find in other regions of the country. Farmers work in the fields where stone remains from temple sites are scattered all around.

Kyongju was selected as one of the 10 most important ancient historic sites throughout the entire world. A large scale cultural survey was undertaken as part of UNESCO’s preservation program for these 10 sites. Historians now realize that during the eight century Kyongju was the fourth largest city in the world with a population of over 1 million. Distant foreign visitors, including Arab and Indian merchants, were attracted by Kyongju’s reputation of being a “Golden City.”

All of the houses within the city walls were roofed with tile as far as the eye could see. The magnitude of Shilla’s attainment in culture and learning for two and a half centuries.