Focus On Photography
1. What can
photography and cameras capture?
A camera and photography can capture any still image that happen in our daily life, a photography can show many detail things that we may miss out in our daily life, thus, camera is a very good tools to store some memories for us.
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2. Explain how a camera works?
1. Light reflects off the object being photographed.
2. This light reflects off the object in all different directions and hits the lens from different angles.
3. The lens focuses these rays of light to a point behind the focal point forming a real image.
4. The film is placed at the point where the real image is projected to.
5. The shutter temporarily moves from in front of the film and allows light to hit the film.
6. Light hits the film causing chemical reactions which "expose" the film.
7. The shutter then closes, and finally the film is advanced so an unexposed piece of film is ready for the next picture.
A camera and photography can capture any still image that happen in our daily life, a photography can show many detail things that we may miss out in our daily life, thus, camera is a very good tools to store some memories for us.
.
2. Explain how a camera works?
1. Light reflects off the object being photographed.
2. This light reflects off the object in all different directions and hits the lens from different angles.
3. The lens focuses these rays of light to a point behind the focal point forming a real image.
4. The film is placed at the point where the real image is projected to.
5. The shutter temporarily moves from in front of the film and allows light to hit the film.
6. Light hits the film causing chemical reactions which "expose" the film.
7. The shutter then closes, and finally the film is advanced so an unexposed piece of film is ready for the next picture.
image come from :http://www.leydenscience.org
3. Define Lens
3. Define Lens
A camera lens is an optical lens or assembly of lenses used in camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.
( image from :http://www.photographybasics.info)
4. Define Shutter
( image from :http://www.photographybasics.info)
4. Define Shutter
shutter is a device that allows light to pass for a determined period of time, for the purpose of exposing phtographic film or a light-sensitive electronic sensor to light to capture a permanent image of a scene
5. What light sensitive material is found in digital cameras?
Sensitive material such as photographic film, or electronically by means of an image sensor is fund in digital cameras.
6. When and where was the first successful permanent photograph made?
The first permanent photograph was an image produced in 1826 or 1827 by the French inventor Joseph Nicephore Niepce The photograph was produced on a pewter polished plate.
7. Who was George Eastman and why was he influential to photography?
Eastman, George American inventor and philanthropist, who played a leading role in transforming photography from an expensive hobby of a few devotees into a relatively inexpensive and immensely popular pastime.
5. What light sensitive material is found in digital cameras?
Sensitive material such as photographic film, or electronically by means of an image sensor is fund in digital cameras.
6. When and where was the first successful permanent photograph made?
The first permanent photograph was an image produced in 1826 or 1827 by the French inventor Joseph Nicephore Niepce The photograph was produced on a pewter polished plate.
7. Who was George Eastman and why was he influential to photography?
Eastman, George American inventor and philanthropist, who played a leading role in transforming photography from an expensive hobby of a few devotees into a relatively inexpensive and immensely popular pastime.
8. What is camera Obscura and how does it work?
A camera Obscura is an optical device that projects an image of its surroundings on a screen. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside where it is reproduced, upside-down, but with color andperspective preserved. The image can be projected onto paper, and can then be traced to produce a highly accurate representation.
(image from: http://en.wikipedia.org/wiki/File:Camera_obscura_box.jpg)
9.Why did it take hundreds of years after the camera Obscura was developed for the first photograph to be made?
It is before the invention of photographic processes there was no way to preserve the images produced by these cameras apart from manually tracing them.
A camera Obscura is an optical device that projects an image of its surroundings on a screen. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside where it is reproduced, upside-down, but with color andperspective preserved. The image can be projected onto paper, and can then be traced to produce a highly accurate representation.
(image from: http://en.wikipedia.org/wiki/File:Camera_obscura_box.jpg)
9.Why did it take hundreds of years after the camera Obscura was developed for the first photograph to be made?
It is before the invention of photographic processes there was no way to preserve the images produced by these cameras apart from manually tracing them.