Wednesday, September 9, 2015

THE CAMERA

HISTORY BEHIND THE CAMERA:

  • In ancient Greece and China, philosophers created the very first "camera". They called it the camera obscura, which in Latin, translates to dark room. Basically, they put a tiny hole in one wall, and whatever was on the other side was projected upside down through the hole.
  • In the seventeenth century, a more modern camera was invented by Isaac Newton and Christian Huygens. They made high quality glass lenses instead of just having a hole in a wall.
  • In the nineteenth century, Joseph Nicephore Niepce added film to the dark box, Thus, creating the modern camera. The first picture took over eight hours to expose!
  • Now, in the twenty first century, cameras are much easier to use, but are still like Niepce's. Light comes in the lens, to the camera, to get exposed. And viola! a picture instantly!
  • There  in one new advancement in camera technology. Digital film. Newer cameras use a ccd which is an electron sensor. But everything else is still the same in the camera.

ALL ABOUT CAMERA MODES:

  • The two most common camera modes are auto mode and program mode. On auto mode, the camera will control flash and exposure. Not all cameras have this. On program mode, you can control flash and some other settings.
  • Another camera mode is portrait mode. In portrait mode, the camera will blur the background, and focus on the person you are photographing.
  • Another mode is sports mode. In sports mode, the camera uses the highest shutter speed to cancel out motion and not make the picture blurry.   

HALF PRESSING:

  • The reason that we use half pressing on the trigger button is so the camera goes onto focus lock and focuses on things that maybe auto focus can't. The camera will also take the picture faster after half pressing than just pressing in the button and then having a delay.

SOME CAMERA FLASH MODES AND WHAT THEY MEAN:

  • This symbol means no flash at all.





  • This symbol means the camera will flash when it thinks the picture needs more light.



TOO MUCH OR TOO LITTLE EXPOSURE?:

  • If you have too much exposure, your picture will be washed out.
  • If you have too little exposure, the picture will be too dark.

LIGHT "STOPS":

  • A "STOP" is the universal measurement for brightness of light.
  • If the earth had two suns instead of one, the light will increase one stop. if we had four instead of two, it would increase two stops.

SHUTTER SPEED AND ARPETURES:

  • the longer the shutter speed, the more light. the shorter the shutter speed, the less light.
  • The arpeture controls the amount of light let into the camera lense.
  • you can increase the amount of light by adjusting the f-stop to a lower number


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