How do Digital Cameras Work?

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Have you ever wondered how digital cameras work?

I know I do. It has always fascinated me how they work. I understand how film cameras work, the shutter is released to expose the light sensitive film to the image being taken, and then the film is developed with chemicals.

But how do digital cameras work when there is no film and no chamicals? Obviously the image is created digitally but it would be interesting to know how!

I recently watched a program on the Discovery Channel called How It’s Made, and they were looking at how sensors are made for digital products including Digital Cameras. It was really interesting, a light sensitive sensor is made using a mixture of circuits and light sensitive chemicals. That when exposured to an image it records the different light information from the image, then a processor converts that information into the photograph. Cool hey!

Now that was a very basic introductory description about how they work. Digital cameras are very sophisticated pieces of equipment with basically miniature computers onboard. But this is an introduction to them, here is another one that puts it slightly better from How Stuff Works: An introduction to how Digital Cameras work. 

I hope between these two descriptions you can get a feel for how they work. How on earth do people come up with these ideas and inventions in the first place? Because digital cameras have revolutionized photography and how we take photographs. That was some idea!

Thanks

Mandy

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