19 August 2014 :: World Photography Day originates
from the invention of the Daguerreotype, a photographic processes developed by
Joseph Nicèphore Nièpce and Louis Daguerre. On January 9, 1839, The French
Academy of Sciences announced the daguerreotype process. A few months later, on
August 19, 1839, the French government announced the invention as a gift
"Free to the World". With the help of Photography our knowledge about
any thing & every thing of the Universe has increased leaps and bound. This
is the day to pay tributes and remember the inventore and pioneers of
photography and highlight their contributions. This years we are celebrating
175th anniversary celebration
of World Photography day. In my opinion the major change which took place in
the field of photography was the introduction of Colour photography.
Colour photography is photography that uses media capable of
reproducing colors, which are traditionally produced chemically during the
photographic processing phase. By contrast, black-and-white (monochrome)
photography records only a single channel of luminance (brightness) and uses
media capable only of showing shades of gray.
In colour photography, light-sensitive chemicals or
electronic sensors record color information at the time of exposure. This is
usually done by analyzing the spectrum of colors into three channels of
information, one dominated by red, another by green and the third by blue, in
imitation of the way the normal human eye senses color. The recorded
information is then used to reproduce the original colors by mixing various
proportions of red, green and blue light (RGB color, used by video displays,
digital projectors and some historical photographic processes), or by using
dyes or pigments to remove various proportions of the red, green and blue which
are present in white light (CMY color, used for prints on paper and
transparencies on film).
Monochrome images which have been "colorized" by
tinting selected areas by hand or mechanically or with the aid of a computer
are "colored photographs," not "color photographs." Their
colors are not dependent on the actual colors of the objects photographed and
may be very inaccurate or completely imaginary.