1.The effect came to be known as the "camera obscura" which is Latin for "dark room". This was the first camera. The hole acted like a lens, focusing and projecting light onto the wall of the dark chamber.

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.A glass lens, a dark box, and film. 4.Light passes through the lens, into the camera, and exposes the film.

5.digital cameras capture the images with an electronic sensor called a CCD.

6.The camera will completely control flash and exposure. On most cameras this is labelled "auto", on others simply "A". Some cameras only have (P)program.automatic-assist, just point and shoot. Unlike full auto mode, you can usually control flash and a few other camera settings.

7.To attempt to blur out the background, camera will try to use the fastest available lens setting (aperture).

8.To freeze motion, camera will use the highest shutter speed possible.

9.If the subject is somewhat off-centre, the auto-focus may be fooled. 10.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.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.is used in every aspect of photography to represent a relative change in the brightness of light.

15. 1 16. 2 

17. more light 18. less light 19.Before light reaches film, it must pass through an opening called an "Aperture". The aperture is like a pupil. You can control the aperture by setting the "Aperture Opening", also known as an F-Stop.

20.The longer exposures ( like 1 second ) give much more light to the film