How does a digital camera take a photo?

Question

I just was wondering today how does a digital camera actually take a picture

Answer 1

A digital camera takes pictures in the same way a film camera does but the recording medium is different. First we have to learn a little bit about light.

We "see" because visible light bounces off the things around us and the "bounces" go into our eye and are captured by the optic nerves which our brain interprets as objects. If you turn off the light in your room, you can't see because there is no more visible light bouncing into your eye. The Army guys you see with "night vision" goggles are able to see infrared light bouncing into their goggles in which the circuits interpret the signals as objects.

In a film camera, light bounces into the lens and hits the film which is light sensitive. (this is why if you open a camera before the film is all used up, you ruin it because the light exposes all the film.) The film takes the impression of the light hitting it and exposes those areas which reveals a picture. This is a negative. The film processor shines a light through the negative onto photo sensitive paper and a positive version of the image is recorded on a print. These prints are what we look at.

In a digital camera, the light bounces through the lens but hits an electronic chip that is light sensitive (because of sensors) and interprets the light as an image. The number of pixels the chip can see determines the clarity of the image. 1 million of these pixels make up a MEGA-pixel. Most digital cameras today have at least 3 million pixels or 3 mega pixels (or 3MP). Each pixel is a part of the whole image. Think of a newspaper as a 1MP printout. The pages look a little blurry and you can see all the dots easily. Now, think of a magazine as a 3MP printout. It's harder to see the dots that make up the magazine pages right? The same concept applies to digital cameras. The more MP the camera can "see" the harder it is to see the dots that make up the image.

For most people, 3MP is enough to print 4x6 prints and 5x7 prints with very little dots showing. To print an 8x10, you need more MP because the image is being stretches very big which spreads out all the dots. With more MP (like 5MP or more) the picture isn't stretched as much and looks nicer. That's a very non-technical explanation! I hope that helps!

Answer 2

The digital camera take picture as a normal camera. But its save in different quality thus quality we talk about pixels.

A simple example take a good digital camera, and take a outdoor photo with a full digital zoom; the photo will be a big crab.

Now use the same camera or equal & take same photo but use ful optical zoom. the photo will look much better now.

Do you know why? optical zoom have the reality and the digital zoom just make the picture biggeerone.

Answer 3

Digital camera take photo simple by just clicking on the camera button. It is so simple and easy. More detail on this link - http://www.rozyjos.info/2014/01/how-to-send-digital-photos-to-walmart-website.html

Answer 4

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Answer 5

Like every other camera it works with the lens focusing the image on a medium, but instead of photo graphic plate it uses pixels on a computer chip.

Answer 6

http://electronics.howstuffworks.com/digital-camera.htm

Answer 7

u push a button then it takes a picture

Answer 8

go to howstuffwork.com