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Questions and Answers
What is photography the science, art and practice of?
What is used to focus light reflected or emitted from objects into a real image?
What produces an electrical charge at each pixel in an electronic image sensor?
What was the primary use of photography for scientists like Eadweard Muybridge?
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What is the result with photographic emulsion?
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What was the first type of camera used in journalism and sports photography?
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What is traditionally used to create a positive image on a paper base?
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What is the primary component of a digital camera that captures light?
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What is an important difference between digital and chemical photography?
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What is the purpose of the camera or 'camera obscura'?
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What is used in analogue cameras?
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What is the output of a digital camera before processing?
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In which fields is photography employed?
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What is high-speed photography used for?
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What was the primary use of photography for artists in the pictorialism movement?
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Why is the subject being photographed required to be illuminated?
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Study Notes
Definition of Photography
- Photography is the science, art, and practice of creating durable images by recording light or other electromagnetic radiation.
- It involves recording light using a light-sensitive material (such as photographic film) or electronically using an image sensor.
Camera and Image Processing
- A lens is used to focus light onto a light-sensitive surface inside a camera during a timed exposure.
- An electronic image sensor produces an electrical charge at each pixel, which is processed and stored in a digital image file.
- In film photography, a latent image is created, which is later developed into a visible image.
- Digital imaging uses an electronic image sensor to record images as electronic data, allowing for image post-processing.
History of Photography
- 19th century: Studio cameras used plates.
- 1900: Box cameras, one of the first mass-produced pocket cameras using film.
- 1922: Compact Kodak folding camera.
- 1932: Leica-II, one of the first 135 film cameras.
- 1949: Contax S, the first pentaprism SLR.
- 1975: Polaroid Colorpack 80 instant camera.
- 2000: Digital camera, Canon Ixus class.
- 2000: Nikon D1, the first digital SLR used in journalism and sports photography.
- 2010: Smartphone with built-in camera spreads private images globally.
Uses of Photography
- Scientists use photography to record and study movements.
- Artists use photography to explore avenues beyond photo-mechanical representation of reality.
- Military, police, and security forces use photography for surveillance, recognition, and data storage.
- Amateurs use photography to preserve memories, capture special moments, tell stories, send messages, and for entertainment.
- High-speed photography visualizes events too fast for the human eye.
Technical Aspects
- Photographers control the camera and lens to expose light recording material to form a latent image or RAW file.
- Digital cameras use electronic image sensors based on CCD or CMOS technology.
- The resulting digital image is stored electronically, but can be reproduced on paper or film.
- The camera is a dark room or chamber from which all light is excluded except the light that forms the image.
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Description
This quiz covers the basics of photography, including the science and art of creating images, camera equipment, and the process of capturing light.
