photoshop
randehfjellner
Tuesday, 29 September 2015
Wednesday, 23 September 2015
My name is Randy Fjellner i am 16 years old and in grade 11. I live in a small town called Vanderhoof in British Columbia. i work at the local KFC. Some of my hobbies are snowboarding, video games and riding my BMX, i am also staring my first year in football. i have always loved using a camera but this will be my first year in photography
Friday, 18 September 2015

Boulevard du Temple a
daguerreotype made by Louis Daguerre in 1838, is generally accepted as the
earliest photograph to include people. It is a view of a busy street, but
because the exposure time was at least ten minutes the moving traffic left no
trace. Only the two men near the bottom left corner, one apparently having his
boots polished by the other, stayed in one place long enough to be visible.
In 1816 Nicephore Niepce, using
paper coated with silver chloride, succeeded in photographing the images formed
in a small camera, but the photographs were negatives, darkest where the camera
image was lightest and vice versa, and they were not permanent in the sense of
being reasonably light-fast like earlier experimenters, Niepce could find no
way to prevent the coating from darkening all over when it was exposed to light
for viewing. Disenchanted with silver salts, he turned his attention to
light-sensitive organic substances.
Robert Cornelius, self-portrait,
Oct. or Nov. 1839, approximate quarter plate daguerreotype. The back reads,
"The first light picture ever taken."
One of the oldest photographic
portraits known, made by Joseph Draper of New York, in 1839, of his sister,
Dorothy Catherine Draper.
Thought to be the first smile
ever captured on Camera. Taken in Wales by Mary Dillwyn, 1853

In partnership, Niepce and Louis
Daguerre refined the bitumen process substituting a more sensitive resin and a
very different post-exposure treatment that yielded higher-quality and more
easily viewed images. Exposure times in the camera, although somewhat reduced,
were still measured in hours.
In 1833 Niepce died suddenly,
leaving his notes to Daguerre. More interested in silver-based processes than
Niepce had been, Daguerre experimented with photographing camera images
directly onto a mirror-like silver-surfaced plate that had been fumed with
iodine vapor, which reacted with the silver to form a coating of silver iodide.
As with the bitumen process, the result appeared as a positive when it was
suitably lit and viewed. Exposure times were still impractically long until
Daguerre made the pivotal discovery that an invisibly slight or latentimage
produced on such a plate by a much shorter exposure could be
"developed" to full visibility by mercury fumes. This brought the
required exposure time down to a few minutes under optimum conditions. A strong
hot solution of common salt served to stabilize or fix the image by removing
the remaining silver iodide. On 7 January 1839, this first complete practical
photographic process was announced at a meeting of the French Academy of
Sciences and the news quickly spread. At first, all details of the process were
withheld and specimens were shown only at Daguerre's studio, under his close
supervision, to Academymembers and other distinguished guests. Arrangements
were made for the French government to buy the rights in exchange for pensions
for Niepce's son and Daguerre and present the invention to the world as a free
gift. Complete instructions were published on 19 August 1839.
After reading early reports of
Daguerre's invention, William Henry Fox Talbot, who had succeeded in creating
stabilized photographic negatives on paper in 1835, worked on perfecting his
own process. In early 1839 he acquired a key improvement, an effective fixer, from
John Herschel, the astronomer, who had previously shown that hyposulfite of
soda (commonly called "hypo" and now known formally as sodium
thiosulfate) would dissolve silver salts. News of this solvent also reached
Daguerre, who quietly substituted it for his less effective hot salt water
treatment.
A calotype print showing the
American photographer Frederick Langenheim. Note, the caption on the photo
calls the process Talbotype
Talbot's early silver chloride sensitive
paper experiments required camera exposures of an hour or more. In 1840, Talbot
invented the calotype process, which, like Daguerre's process, used the
principle of chemical development of a faint or invisible "latent"
image to reduce the exposure time to a few minutes. Paper with a coating of
silver iodide was exposed in the camera and developed into a translucent
negative image. Unlike a daguerreotype, which could only be copied by photographing
it with a camera, a calotype negative could be used to make a large number of
positive prints by simple contact printing. The calotype had yet another
distinction compared to other early photographic processes, in that the
finished product lacked fine clarity due to its translucent paper negative.
This was seen as a positive attribute for portraits because it softened the
appearance of the human face. Talbot patented this process, which greatly
limited its adoption, and spent many years pressing lawsuits against alleged
infringers. He attempted to enforce a very broad interpretation of his patent,
earning himself the ill will of photographers who were using the related
glass-based processes later introduced by other inventors, but he was
eventually defeated. Nonetheless, Talbot's developed-out silver halide negative
process is the basic technology used by chemical film cameras today. Hippolyte
Bayard had also developed a method of photography but delayed announcing it,
and so was not recognized as its inventor.
In 1839, John Herschel made the
first glass negative, but his process was difficult to reproduce. Slovene Janez
Puhar invented a process for making photographs on glass in 1841; it was
recognized on June 17, 1852 in Paris by the Académie Nationale Agricole, Manufacturer
et Commerciale. In 1847, Nicephore Niepce's cousin, the chemist Niepce St.
Victor, published his invention of a process for making glass plates with an
albumen emulsion; the Langenheim brothers of Philadelphia and John Whipple and
William Breed Jones of Boston also invented workable negative-on-glass
processes in the mid-1840s.
Subscribe to:
Posts (Atom)