Cameras allow us to capture life's moments and save them as photographs. Camera technology was the first domino in a long technological evolution that has given us film and high-definition video. Now cameras are a part of our daily lives and are integrated into our cell phones, security systems and businesses. more »
Video cameras may make people act nervous or different. If you want to capture true moments from the babysitter, for surveillance, or just general interest, then you should consider getting a spy camera. There are stable spy cameras that can be wired into homes, but there are also spy cameras for on the go adventures. You can catch... more »
Collecting vintage cameras has become more popular in recent years, especially as digital cameras have replaced film cameras in most homes as the first choice for family and holiday snapshots. Collectors should follow a few simple guidelines when considering vintage cameras, whether they are collecting for fun or hoping to find... more »
Setting up and using an Internet camera is easy. With a basic USB web camera and the proper software, broadcasting via the Internet is a good way to add a face to voice and text communication. Internet cameras are generally used in conjunction with popular instant messaging and voice chat systems like Yahoo Chat, ICQ, AOL Messenger,... more »
Capturing a moment in time is the essential function of a camera, but there are many other uses for cameras as well, especially digital cameras. For example, have you ever thought of using the LCD screen on your digital camera as a flashlight? How about letting your camera act like binoculars by zooming in on a far-away object? Here... more »
The parts of the simplest possible camera are a dark box with a small hole or window and some photographic medium on the inside back wall for recording the image. For everyday cameras, the dark box is replaced by a camera body. The window--technically called the aperture--is covered with a ground-glass lens for focusing the light that... more »
Looking for a new camera? Whether you're a pro, hobbyist or snap 'n shoot shutterbug, you're in luck! There is no shortage of choices in the...
Take that prize-winning picture with high-quality lenses. Avoid disrupting a shot by shooting at a long range with the perfect zoom. Choose the...
Where would the dinner-and-a-movie be without video cameras? Whether you’re taping your child’s first birthday or filming the next great...
Learn all about getting the perfect shot with SLR cameras. These guides focus on SLR cameras and how they are necessary for taking the right...
Is your digital camera flash not working? Get tips on how to use the flash feature in this free...more »
Using ISO features can improve your pictures! Learn how to use the ISO feature on digital...more »
Digital cameras require a large voltage to start, so batteries with energy stored might not have...more »
Exploring cameras for beginners; learn how to buy a new digital or manual camera, what to...more »
Can cameras actually capture evidence of ghosts? Learn all about paranormal phenomena and ghost...more »
Every photographer knows that good photographs require good equipment. Learn how to use flashes...more »
Learn about using digital cameras for birding in this free bird watching video.more »
Tips for telling After Effects how you want to see your files. Learn how to work with the camera...more »
Old cameras work using a special thin strip of film. The film is treated with a special light sensitive chemical that works by causing a chemical... more »
Digital cameras are not all created equal. If you are shopping for one, it's important to compare features and abilities to make the right choice.... more »
When looking to purchase a digital camera, your best bet might be to purchase one on the Internet. Some Internet sites offer good deals and are... more »
Nikon is one of the leading camera manufacturers in the world, and produces both film and digital cameras. The company is known for their... more »
Photography is becoming more and more popular today, thanks to the advanced cameras that companies are making. One of the most popular camera... more »
As digital SLR cameras become affordable for hobbyists, more and more users are moving away from point and shoot cameras and are choosing to... more »
Surveillance cameras have a variety of uses and applications. Though surveillance cameras have many positive uses, critics also point out the... more »
Security footage is vital to home and business protection. Not only can security cameras help prevent and catch criminal acts, but breakthroughs... more »
Antique cameras bring about a sense of nostalgia like nothing else. From the portrait plates and floor standing cameras of the Old West to the... more »
Humans as a species have very poor night vision, especially compared to other mammals. The eyes can only process a small portion of the... more »
You just bought your digital camera and took your first pictures. Now you have to get your pictures off your camera and into your computer. This... more »
Before purchasing your first digital camera, there are a number of advantages and disadvantages to consider, from price to features, size and... more »
Because cameras have very sensitive parts and chips and can be damaged easily, they require careful handling. Always insert your hand into the... more »
People often wonder why feature films look so much better than their home videos. The reason for this is that the cameras used to shoot movies are... more »
Every year, millions of different movies, television shows, Internet broadcasts and other types of film and video productions are produced. The... more »
Digital cameras come in a wide variety of brands and price ranges, and have many different features to choose from. All of these options can make... more »
If you have a digital camera to sell, you can maximize your profits and put them toward the purchase of a new camera. You can sell your digital... more »
There are several important factors to consider when deciding which new camera to purchase. To compare Panasonic and Sony digital cameras, you... more »
There are a number of professional photographic cameras. From small, portable 35 mm cameras to large format studio cameras, each camera serves a... more »
The body of a disposable camera is a modern variant of the old "box camera" concept introduced by Kodak. Box cameras were made to be inexpensive... more »
Cameras from Large to Small, Film to Digital
A camera is a device that records images, either as a still photograph or as moving images known as videos or movies. The term comes from the camera obscura (Latin for "dark chamber"), an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. A majority of cameras have a lens positioned in front of the cameras opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture.
A typical still camera takes one photo each time the user presses the shutter button.
A typical movie camera continuously takes 24 film frames per second as long as the user holds down the shutter button, or until the shutter button is pressed a second time.
History
The forerunner to the camera was the camera obscura. The camera obscura is an instrument consisting of a darkened chamber or box, into which light is admitted through a convex lens, forming an image of external objects on a surface of paper or glass, etc., placed at the focus of the lens.Oxford English Dictionary. The camera obscura was described by the Arabic scientist Ibn al-Haytham (Alhazen) in his Book of Optics (1015–1021)."Alhazen">Nicholas J. Wade, Stanley Finger (2001), "The eye as an optical instrument: from camera obscura to Helmholtzs perspective", Perception 30 (10), p. 1157 – 1177. The actual name of camera obscura was applied by mathematician and astronomer Johannes Kepler in his Ad Vitellionem paralip read more at » http://en.wikipedia.org/wiki/Camera
http://en.wikipedia.org/wiki/Camera
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