DIgital cameras are are not just cameras but more than that. generally we expect still photographs but using d-cams, u also get video with sound. this is a unique feature in small d-cams...........u can shoot like video. coming in this category, they became more like multimedia recorders than cameras. however, they still retain some features of film cams e.g. shutters and exposurers and lenses besides their own loads of new features, that include replacement of films by solid-state image sensors and they are divided in two categories i.e. CCD and newer CMOS image sensor.
OPerating system: .............the d-cam needs an operating system like the computers and this software works for image compression, file storage, image display and other basic tasks which helps working of the d-cam.......................as the computers need processors to handle their calculations, so required by the d-cams.....in this way your d-cam is half computer in which the processor provide functions like image preview, image capture, compression, filter, storage, transfer snd display...............but one imp thing is that u cannot download the pix taken by another camera which will need its own software...............so for different make of cams, different software are used.........not one software will be used for all d-cams. your-own......mine-own system.
THe IMAGE SENSOR.........it is worth noting that the image sensor is the 'film' in a d-cam and it plays such an imp role as their characteristics have a great impact on the quality of your images.............................
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