How does a camera work? How does the camera work or the cameras that our cell phones have and what they have to make them work?

Pls i want to know 

9 Answers

Relevance
  • 6 days ago

    There are a thousand online articles (or even - gasp - books) which explain it far more thoroughly than we can in the short space allotted - start looking.

  • keerok
    Lv 7
    1 month ago

    A camera is a light-tight box with a small hole (aperture) on one side equipped with a cover (shutter). Inside the box is a medium (film or digital sensor) that absorbs the light. Since it takes a carefully measured amount of light to create a clear photograph, there are ways to control the aperture size and the time the shutter stays open. There is also a way to change the light sensitivity of the medium. 

    Light that reaches the digital sensor is converted to electrical signals which is then translated to digital data. On a smartphone and on digital cameras in LiveView mode, the image can now appear (almost instantaneously) on the LCD. If the picture is taken, the digital data is then stored as a digital file in the gadget's memory card.

    Lenses? They channel light to the sensor and the way they do it can be modified by varying the qualities of the optics inside the lens. There are cameras that don't have a lens. Pinhole cameras only have a tiny hole. The earliest cameras were like this and not surprisingly, the images they produced weren't as clear as what we have nowadays.

  • Anonymous
    1 month ago

    You know, how when you get up close to a TV you can see the individual colored dots glowing light? Now, shrink that down and, behind the lens, picture a tiny grid of dots that *sense* light in their favorite color, and a computer circuit that reads those dots and makes a picture file or video stream out of them.

  • garry
    Lv 5
    1 month ago

    cameras have a bigger cmos and lens , phones have a small cmos  , what is better 3 mm phone lens or a 6 mm and upwards cmos and biger lens for a proper camera , you can spend upto $1500 for a phone ., or you can get a cheap phone and an extra good quality camera for $1000 , try enlarging them then you can see the difference .

  • How do you think about the answers? You can sign in to vote the answer.
  • Sumi
    Lv 7
    1 month ago

    Light enters the camera via a lens and its aperture. 

    The light then strikes the pixels on the sensor which creates an electrical charge that is stored within the makeup of the pixel.  The camera then reads the charge from each of the red, blue and green pixels to determine the brightness.  This information is then converted into an image file and saved to your SD card.

  • 1 month ago

    They use a lens to focus reflected and transmitted light from a subject onto a silicon sensor with millions of photosensitive dots, the data from that gets processed into a format which can be seen on a phone screen or sent to a printer to be made into a print.  It's quite clever how they turn analogue to digital and then back to analogue again.

  • Andrew
    Lv 7
    1 month ago

    There are a thousand online articles (or even - gasp - books) which explain it far more thoroughly than we can in the short space allotted - start looking.

  • Anonymous
    1 month ago

    Cameras work by capturing light that is reflected from something you want to photograph. They use either film or silicon based light sensors to record, and there is a shutter to control the duration of the amount of time the film or sensor is exposed to the light and a lens to capture and focus the light onto the sensor. 

  • 1 month ago

    Any explanation, even the most basic, 

    would be too much to type out here.      

    This is a job for Wikipedia. 

Still have questions? Get your answers by asking now.