answers to questions on your blog

1. This effect was known as "camera obscura" which means "dark room" in Latin. Where the hole would act like a lens, to where light would project and focus throughout the wall of a dark chamber. This was achieved by being in a dark room with light projecting through.
2.  Issac Newton and Christian Huygens got one step closer to modern cameras by making high quality glass lenses.
3.  Parts of Niepce's modern camera included a dark box, a glass lens, and film.
4.In both digital and Niecpe's camera light passes through the lens, into the camera, and exposes the film, which creates a photo.
5.  To capture an image using a digital camera it uses an electric sensor called CCD.
6. With Auto mode everything is controlled and done by the camera and with Program mode the camera will help you, but you will still have control over some settings such as the flash.
7.  Portrait mode is used to blur out the background and to use the fastest available lens.
8. Sports mode is used to freeze motion, the camera will use the highest shutter speed possible.
9. The photographer must set both shutter and aperture mode.
10. pressing the "half press" button it...

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

11. This symbol is used to disable the flash to make more dramatic with natural light.

12.  Auto-flash is enabled by default and will automatically fire if the camera thinks it needs more light.

13. If you have to much light in a picture it will look and be washed out.

14. If you don't have enough light in the picture it will make it look too dark.

15. "stop" is used represent a relative change in the brightness of light.

16. Our planet is one stop brighter.

17. our planet would be 2 stops brighter.

18.  The effect to a longer shutter speed is more light.

19. The effect to a shorter shutter speed is less light.

20.  The aperture is like a pupil you can control by settings.

21.  Larger openings = more light.