history of photography
Al Haytham was a scientist who invented the Pinhole camera. Al Haytham was born on the1 July 965 AD in Iraq and died on the 6th of march 1040 in Egypt.The pinhole image is a natural optical phenomenon. The pinhole camera is the easiest camera to use this camera does not have a lens but it has a tiny aperture, a pinhole effectively a light-proof box with a small hole in one side. This camera is also known as a camera obscura.
Henry Fox TaLbot
Henry Fox Talbot was a English inventor who invented the calotype what was paper with silver iodide. Calotype was invented in September 1840. If you wanted to use the calotype to create a photogenic drawing you would have to get a piece of paper coated with silver chloride that would darken when you exposed to light.
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CAMERA
In 1685 the box form of the camera obscure was created by Johann Zahn. The camera obscure was actually an accident. The way you use the obscure is you have to make the room dark you go in then with a small hole there will be a image on whatever is on the outside the camera obscure but however the image will be upside down.
GEORGE EASTMANGeorge Eastman was an American entrepreneur who founded the Eastman Kodak Company. Eastman was born on the 12 July 1854 and died on the 14 March 1932. George Eastman opened the Eastman dry plate and film company. Eastman sold his first camera in 1888 and consisted of a box camera with 100 exposures. Eastman also invented the brownie (camera) in 1900.The brownie was a camera with a simple meniscus lens and a curved film plane to compensate for the lens.
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LOUIS DAGUERRE The Daguerre is a image which is formed on a highly polished silver surface. Daguerre started making really successful images using his improved process in 1837. The 19th of august 1839 was the date when the Daguerreotype process was first announced to the world, it happened In a meeting in Paris.
Steps in making a Daguerrotype:
Step 1 - A plate of silver coated copper is cleaned and highly polished, with a soft cloth, to the point where it has a mirror-like brilliance. Step 2 - The polish paint is sensitised by exposing it to iodine and bromine fumes. It is first suspended in an air tight compartment which contains chloride of iodine till the surface has turned yellow. After it is contained in a few more fumes. Step 3 - The sensitised plate is inserted into a light proof holder with a protective slide and placed inside the camera. Step 4 - The subject is placed infant of the camera. The protected side is now been moved and once the photographer finds the right pose, the lens cape is removed for a period of time until the image is captured on the sensitised surface of the plate. Step 5 - Once the image is brought by suspending the photographic plate over a dish of mercury inside a humming box. The mercury is heated by a sprit lamp. Step 6 - The photographic image is made permanent by bathing the photographic plate in hypo sulphate of soda. Step 7 - The image on the the photographic plate can also be toned and strengthened by treating the plate with gold chloride. Step 8 - Lastly, the photographic plate is washed in distilled water and then set to dry. The last two steps, which are Step 9 (the colouring) and step 10 (mounting and presenting) are optional. |
philipe halsman
Philippe Halsman was an American portrait photographer. He was born on the 2 may 1906 and died on 25 June 1979.
shutter speed
Shutter speed in photography is time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph. The amount of light that reaches the film or image sensor is proportional to the exposure time.
aputure
Today we took these pictures with the the camera on aputure, is a hole or an opening through what light travels.