Tuesday, September 11, 2012

Camera history and Information.

1. Explain the “camera obscura” effect. How is it achieved? The effect came to be known as the "camera obscura" which is Latin for "dark room". This was the first 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, 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? A glass lens, a dark box, and film.

4.What do modern digital cameras have in common with Niepce’s camera? They both pass light through the lens, into the camera, and exposes the film. The end result is still a photograph.


5. What do digital cameras use to capture an image? Replacing old-fashioned plastic film, digital 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? In Auto Mode the camera will completely control flash and exposure. In Program Mode there is an automatic-assist, just point and shoot. Unlike full auto mode.

7. What is the Portrait mode used for? How does it work? The Portrait Mode is used to attempt to blur out the background.The camera will try to use the fastest available lens setting which is aperture. 

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

9. Why should you do a half press on the trigger button? If the subject is somewhat off-centre, the auto-focus may be fooled. You have probably seen this effect many times before. A half-press will tell the camera that you're almost ready to take a shot and to be prepared, triggering the following things to happen

10. What does this symbol mean? Disabled Flash is no flash. There are alot of cases where you may not want flash. The mood of the photograph can sometimes be more dramatic when the natural light is used.


 When would you use this? To make the photo more dramatic

 11.What does this symbol mean? In most camera modes, Auto-flash is enabled by default and will automatically fire if the camera thinks it needs more light.

When would you use this? When its too dark


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

13. What happens to your photo if there is not enough light? If there is not enough light and the picture is too dark. A good photograph depends on the exposure settings that will give the film the right  amount of exposure.

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? 1.

16. How many stops brighter is the new planet if there are four sons instead of two? (Hint: the “show answer” feature is wrong). 2.

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

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

19. What does the aperture control? The aperture is like a pupil. 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? Increase the aperture to highest setting.


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