51
Chapter 3 Lenses
Test Your Knowledge
Write your answers on a separate sheet of paper. Please do not write in this book.
1. List two basic principles of light related to how a lens works.
2. A _____ camera does not need a lens to make a photo.
3. A lens composed of two or more simple lenses is known as a _____ lens. Each of these
simple lenses is called a(n) _____.
4. The angle of view of a lens is determined by the _____.
5. True or False? A dimly lit subject would be photographed with a fast lens.
6. Check the f-stop best suited to take the picture in No. 5. _____ f/2 or _____ f/16
7. Depth of fi eld is controlled by _____.
A. focal length of lens
B. f-stop of lens
C. type of lens mount used
D. All of the above.
E. None of the above.
8. List three uses for a wide angle lens.
9. When should a telephoto lens be used?
10. How does a zoom lens differ from other types of lenses?
11. Which of the following items are recommended to safely clean a lens?
A. Soft brush
B. Silicon eyeglass tissue
C. Clean handkerchief
D. All of the above.
E. None of the above.
For Questions 12–31, match each of the terms with the defi nition on the right.
12. Lens
13. Pinhole c amera
14. Transmitted l ight
15. Refracted l ight
16. Simple lens
17. Convergent lens
18. Divergent l ens
19. Aberrations
20. Stopping down
21. Image s ize
a. Does not need a lens to take a picture
b. Made of a single piece of glass or plastic
c. Made from transparent material with at least one
curved surface
d. Light rays that are bent
e. Light that passes through transparent material
f. Size of subject produced on the negative
g. Flaws or defects in the lens
h. Lens that bends light rays inward
i. Lens that bends light rays outward
j. Reducing size of lens aperture