Camera History & Parts

Camera History & Parts 

CAMERA HISTORY

1. Explain the “camera obscura” effect. How is it achieved?

• Inside a completely dark room, a tiny hole is created in one wall. Through the hole light is focused, and the outside scene is projected (upside down) on the opposite wall.

2. What invention during the 17th Century helped man get a step closer to creating the modern camera?

• 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. What were the parts of the first modern camera invented by Niepce?

• the final touch was added by Joseph Nicéphore Niépce. He added *film* to create the first successful photograph, and the modern camera was born: A glass lens, a dark box, and film.

4.What do modern digital cameras have in common with Niepce’s camera?

• Light passes through the lens, into the camera, and exposes the film. And guess what? The end result is still a photograph.

5. What do digital cameras use to capture an image?

•  cameras capture the images with an electronic sensor called a CCD. Photographs are stored on reusable computer memory devices.

6. What is the difference between the Auto Mode and the Program mode?

• Program automatic-assist, just point and shoot. Unlike full auto mode, you can usually control flash and a few other camera settings.

7. What is the Portrait mode used for? How does it work?

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

8. What is the Sports mode used for? (not just sports) How does it work?

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

9. Why should you do a half press on the trigger button?

•  Using the half-press is easy, aim your camera directly at the subject and gently press the shutter release button until the camera comes "alive". If you want to take the shot, press down until the camera fires. 

10. What does this symbol mean?

• disable flash (no flash)

11.What does this symbol mean?

·         Auto-flash

12. What happens to your photo if there is too much light?

• Too much light and the picture will be washed out.

13. What happens to your photo if there is not enough light?

·         Not enough light and the picture will be too dark.

14. What is a “stop.”

·         Is used in every aspect of photography to represent a relative change in the brightness of light

15. How many stops brighter is the new planet if there are two sons instead of one?

·         One

16. How many stops brighter is the new planet if there are four sons instead of two?

·         Two

17. What affect does a longer shutter speed of have?

·         More light

18. What affect does a shorter shutter speed have?

·         Less light

19. What does the aperture control?

·         You can control the aperture by setting the "Aperture Opening", also known as an F-Stop.

20. When adjusting the aperture, how can you increase the amount of light?

·         larger openings = more light