Camera history

1.  Optical device that projects an image of its surroundings on a screen. Portable camera Obscure and film 
2. High quality glass lens
3. Glass lens, small box, and film
4. Light passes through the lens, into the camera, and exposes the film. End result = photograph 
5. Digital film
6. Auto mode the camera will completely control the flash and exposure. program mode automatic assist just point and shoot. unlike full auto mode, you can usually control flash and a few other camera settings.
7. Attempt to try and blur out the background. camera will try to use the fastest available lens settings.
8. To freeze motion. camera will use the highest shutter speed possible.
9. To focus lock 
10. Disable flash
11. Auto flash
12. To much light and the picture will be washed out.
13. Not enough light and the picture will be to dark.
14. Represent a relative change in the brightness of light
15. 1
16. 2
17. More light
18. Less light
19. Aperture opening also known as F-stop 
20. Having a longer exposure like 1 second