Friday, September 6, 2013

Camera History and Inforamation

1. Explain the “camera obscura” effect. How is it achieved?
Early Greek And Chinese Philosophers discovered a optical effect that they never seen before. Inside a completely dark room there is a tiny whole created in one wall. The light is then focused and is projected (upside down) on the opposite wall. This became known as the camera obscura.

2. What invention during the 17th Century helped man get a step closer to creating the modern camera?
Isaac Newton and Christian Huygens perfected the understanding of optics and the processs of making high quality glass lenses.

3. What were the parts of the first modern camera invented by Niepce?
In the 19th Century there was a portable camera obscura but it was missing a very important piece. Niepce invented the film which was the piece the obscura needed. A dark room, a glass lens, and film is all it needed to make the modern camera.

4.What do modern digital cameras have in common with Niepce’s camera?
In both the modern digital camera and Niepce's camera the light passes through the lens, into the camera, and exposes the film, and the result is a photograph.

5. What do digital cameras use to capture an image?
Digital cameras capture a photo using a electronic sensor called a CCD.

6. What is the difference between the Auto Mode and the Program mode?
In program mode you just point and shoot and you can usually control the flash and a few other camera settings. In auto mode the camera will completely control the flash and exposure.

7. What is the Portrait mode used for? How does it work?
Portrait mode is used to attempt to control out the blur in the background and the camera will try to use the fastest available lens setting.

8. What is the Sports mode used for? (not just sports) How does it work?
Sports mode is used to freeze motion the camera will use the highest shutter speed as possible.

9. Why should you do a half press on the trigger button?
You should use the half press on the trigger button because you have more control over the focus, faster camera response time, and it encourages better composition.

10. What does this symbol mean?
When would you use this?
This symbol indicates that there is no flash on. You would use then when you want to use natural light.

11.What does this symbol mean?
When would you use this?
This symbol means that the camera will only flash if it feels that the photo needs more light.

12. What happens to your photo if there is too much light?
If there is too much light exposed then the photo will be washed out.

13. What happens to your photo if there is not enough light?
If there is not enough light then the photo will be to dark.

14. What is a “stop.”
A stop is a relative measurement of light it is used in every aspect of photography to represent the relative change in the brightness of light.

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

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

17. What affect does a longer shutter speed of have?
Longer shutter means more light.

18. What affect does a shorter shutter speed have?
Shorter shutter means less light.

19. What does the aperture control?
The aperture controls the light, its like a pupil.

20. When adjusting the aperture, how can you increase the amount of light?
You can increase the amount of light by opening the aperture larger.

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