Gadget of the Week
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Samsung UA55C9000 3D LCD TV
At $10,000, the Samsung UA55C9000 costs more than twice what an otherwise similarly specified, similarly sized, Samsung TV would sell for. So what’s so special about it? We reckon that several of the more extraordinary features justify that price.
Photo and Video
Digital SLR cameras: The image sensor explained
Peter Blasina- 15/12/2009
Tags: digital cameras, digital photography, digital SLR camera, Peter Blasina
For more than 150 years photography has involved light, chemistry and darkrooms. Today, all that has changed, and while photography is still about light, the chemistry and darkrooms have been replaced by pixels and software that allows you to manipulate images. This makes the art of picture taking much more creative and so much cheaper than with film.
In a digital camera, analog film has been replaced by a light-sensitive image sensor, that converts light into electrical signals, which are then stored on the camera's memory card.
Video - digital SLR camera image sensors explained
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