Wednesday, September 12, 2012

Camera History and Information

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

 "Camera obscura" is Latin for "Dark room". This was the 1st camera, the hole acted like a lens, focusing and projecting light onto the wall of the dark chamber.

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

3. What were the parts of the first modern camera invented by Niepce?
In 1827, Joseph Nicephore added a couple of final touches. He added Film to create the first successful photograph, and the modern camera was born.

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. Ending in the result of a photograph.

5. What do digital cameras use to capture an image?
Digital cameras capture the images with an electronic sensor called a CCD. Photographs are stored on reusable computer memory devices.

Camera Modes

6. What is the difference between the Auto Mode and the Program mode?
Auto- The camera will completely control flash and exposure.
Program- automatic-assist, just point and shoot. Unlike full auto mode, you can control flash and 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?
The Sports mode is used to freeze motion, camera will use the highest shutter speed possible.

The Half Press

9. Why should you do a half press on the trigger button?
Faster camera response time, more control over focus, encourages better composition.
Controlling Flash
10. What does this symbol mean?

Disabled flash ; no flash





11.What does this symbol mean?


Auto-Flash: enabled by default and will automatically fire if the camera thinks it needs more time.



Introduction to Exposure
12. What happens to your photo if there is too much light?
If the photo has too much light, the picture will be washed out.

13. What happens to your photo if there is not enough light?
If the photo doesn't have enough light, the picture will be too dark.


The Universal Stop
14. What is a “stop.”
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 suns instead of one?
One

16. How many stops brighter is the new planet if there are four suns instead of two?
 3 stops
Shutters and Aperture's
17. What affect does a longer shutter speed of have?
The longer exposures give much more light to the film than a 1/1000 of a second exposure.

18. What affect does a shorter shutter speed have?
The shorter shutter gives Less Light.

19. What does the aperture control?
The aperute controls light by closing up to restrict light, and opening up to let it through.

20. When adjusting the aperture, how can you increase the amount of light? 
By switching the 'F-Stops'. Smaller F-stops numbers give larger openings; larger openings gives more light.

 

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