Camera History

  1.    Camera obscura is an optical device that projects an image of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to photography and the camera. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside, where it is reproduced, rotated 180 degrees (thus upside-down), but with color and perspective preserved.
  2.  In the 17th century, the modern camera came one step closer when Isaac Newton and Christian Huygens perfected the understanding of optics and the process of making high quality glass lenses.
  3.     In 1827 Joseph Nicéphore Niépce added the final touch. He added *film* to create the first successful photograph, and the modern camera was born: A glass lens, a dark box, and film.
  4.    Even the latest digital cameras work the same way as their ancestors:
Light passes through the lens, into the camera, and exposes the film. And guess what? The end result is still a photograph.
 5.   Replacing old-fashioned plastic film, digital cameras capture the images with an electronic sensor called a CCD. Photographs are stored on reusable computer memory devices.
 6.   Auto The camera will completely control flash and exposure. On most cameras this is labelled "auto", on others simply "A". Program: Automatic-assist, just point and shoot. Unlike full auto mode, you can usually control flash and a few other camera settings. 
 7.  Portrait- To attempt to blur out the background, camera will try to use the fastest available lens setting (aperture). 
 8.  Sports- To freeze motion, camera will use the highest shutter speed possible. 
 9.  The "half-pressed" button should be used because:

• faster camera response time
• more control over focus
• encourages better composition  

 10. Disabled Flash is whe there is no flash. There are many cases where you may not want flash at all. The mood of the photograph can sometimes be more dramatic when the natural light is used.
 11. Auto-Flash
In most camera modes, Auto-flash is enabled by default and will automatically fire if the camera thinks it needs more light.
 12. Too much light and the picture will be washed out.
 13. Not enough light and the picture will be too dark.
 14. The term "stop" is used in every aspect of photography to represent a relative change in the brightness of light.
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 17. Longer shutter speeds = more light
 18. shorter shutter speeds = less light
 19. The aperture determines how collimated the admitted rays are.

 20. You can adjust the aperture to Smaller F-stops numbers which will increase the amount of light.