Friday, September 14, 2012

The Camera II

1.Explain The Camera Obscura Effect. How is it achieved? 
-The Camera obscura effect is created when a whole is made in the wall of a dark room. Light flows in trough the whole, and reflects the light on the opposite dark wall (the one w/o a whole). The reflection upside-down.

2.What creation during the 17th century helped men get one set closer to creating a modern camera? 
-Isaac Newton and Christian Huygens perfected the understanding of optics, and worked on getting high quality glass lenses to better focus and project light on the "dark room"

3.What where the parts of the first modern cameras invented by Niepce?
-Glass lens and film.

4.What do modern digital cameras have in common with Niepce's?
-Light still passes trough the lens to expose the film, and as a result, a photograph. Just like with Niepce's.

5.What do digital cameras use to capture an image?
-They use an electronic sensor which is called CCD. The photographs are then stored on reusable computerized memories.

6.What is the difference between auto mode and program mode?
-In auto mode, the camera completely controls the flash and the exposure. The program mode, on the other hand, you point and shoot, but can still control the flash and other camera settings.

7.What is the portrait mode used for? how does it work?
-The portrait mode is used to blend the background. It does this by using the fastest available lens setting.

8.What is the sports mode used for? how does it work? 
-This mode is used to freeze motion. It does this by using the highest speed shutter possible.

9.Why would you do a high press on a trigger button?
-Faster camera response
-more control over focus
-better composition

10-11.Symbol Meanings:
This symbol means disabled flash:

you would use this if you would like a more dramatic image.

This symbol means Auto flash:







you would use this whenever you need more light.

12.What happens to your photo if there is too much light?
your picture will be "washed out"

13.What happens to your photo if there is not enough light?
The picture will be too dark.

14.What is a stop?
a stop is a relative measurement of light. It represents a relative change in the brightness of light.

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

16.How many stops brighter is a new planet if there are 4 sons instead of two?
two stops.

17.What effect does longer shutter speed of have?
more light.

18.What effect does a shorter shutter speed have?
less light.

19.what does the aperture control?
It controls the size of the opening, therefore, in controls the size of the image.

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



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