c. The depth of field scale is especially useful when you must know the
exact sharpness range of the camera lens at various distance and aperture
settings. This enables you to include objects at various distances within the
area of focus.
REVIEW EXERCISES
18.
Describe, in your own words, the meaning of "conjugate distance".
_______________________________________________________________________________.
19.
What is meant by "distances vary inversely"?
_______________________________________________________________________________.
20.
List the formulas used with the "conjugate distances.
a.
b.
c.
21.
When light rays from a near object pass through the lens, they form a
sharp image behind the ground glass.
To bring this image into sharp focus,
which way should you move the lens?
_______________________________________________________________________________.
22.
What is meant by the resolving power of a lens?
_______________________________________________________________________________.
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