The Camera

The camera obscura effect was the first camera which came around approximately 500 BCE. It was achieved by focusing a light at a tiny hole in the wall and the outside scene would be projected upside down on the opposite wall. Isaac Newton and Christian Huygens got us a huge step closer to the modern camera in the 17th century. they obtained the understanding of optics and the making of high quality glass lenses. In the 19th century the first modern camera was made. Now the only things you needed for a camera was a dark box, a glass lens, and film. modern digital cameras work the same way as the ones back in the 1800s. Light passes through a lens and exposes film. Digital cameras use a CCD which is a type of digital censor and the photos are stored in memory cards.
   Cameras today use more advanced technology and have many different modes. If you are a more advanced photographer you can choose program mode and set your own personalized settings. If you choose auto mode the camera does all the work. It controls things like the exposure, focus and zoom. In sports mode, the camera uses the highest shutter speed to prevent the pictures from blurring. When you're in auto mode, you should half press the shoot button to let the camera focus. 
   The symbol above means that the flash is disabled. Some pictures are better without the flash.
This symbol means that the camera will flash automatically. If you're in a dark room this setting will turn on. You would use this setting to illuminate your target.
   Exposure is a very important part of a photograph. If your photo has too much light it could become washed out. If you don't have enough light then the photo will be too dark.
  A stop is a measurement of light. If you double the amount of light you add a stop. If you double the light again you add another stop. If a new planet has two suns instead of one then it has two stops. If another planet has four stops then it has three stops.
   Shutter speed is another important aspect of photography. The longer the shutter speed the more light you get, and the opposite for a short shutter speed. The aperture controls how much light gets in. It works similar to a human pupil. You can increase the amount of light by opening the aperture.