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The term analog refers to simple or SLR cameras, which uses film as the printing medium for photographs. They are then produced in analog, using a chemical process.
Film cameras have the advantage of being relatively inexpensive as compared digital cameras of the same quality, but on the other hand, buying film and developing rolls can get expensive. Analog cameras have 35 mm film; hence light covering a bigger area than in digital cameras.
The main disadvantage of an analog camera is for beginners; they would need to note down the camera settings, before actually taking pictures. Different effects on pictures, which result from developing, also need to be tracked.
The most important advantage of an analog camera, the reason why most photographers choose it, is the picture quality. The picture quality that can be achieved with a film camera is very high and the images turn out extremely sharp. The reason behind this is the chemical reaction which takes place when light from the shutter falls on the film, and as a result an exact, crisp and inverted i.e. negative representation of the object is obtained. This is not possible with a digital camera.
Digital photography is no different from film/analog Photography, as matter of fact the technique and style used is the same, except for one aspect. The distinction between digital and analog photography is that traditional film is replaced by a charged coupled device (CCD), which contains tiny grids containing millions of photosensitive elements.
When a picture is clicked, a ray of light falls on the photosensitive elements, which then registers a specific intensity of light, as an electrical charge. The electrical charges are then passed onto an analog-to-digital converter that transforms them into digital data. To determine the actual color value of any one pixel, the camera's software makes a calculated guess based on the values registered by three neighboring photosensitive elements. This is the reason which accounts for the reduction the image's level of detail, and eventually translates into the quality of image.
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digital video camera vs analog.?
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Set top box is basically used to convert the digital signals broadcasted by digital signal broadcasters to analog signals, in case you wish to have your analog tv, but would like to have an access to digital channels. Digital channels definitely have better quality signals than analog and therefore you will have a better picture quality and signal quality even though you have converted the digital signals to analog.
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They are about equal in quality. Far better than the analog hookup.
If you have a digital tv and an outdoor antennae do you need a converter box?
In the US the answer is probably not. Digital and analog TV broadcasts use the same frequencies and antennas. Digital TV is more fussy about signal quality than the older analog signals. So if you get marginal analog reception, figure on getting a new antenna for digital. The idea that there are special HDTV antennas is just marketing hype. Any antenna that gives you better digtial reception will also give you better digital reception.
