Lens Basics Flashcards
1
Q
This is the center where the rays from two different sources are assumed to cross.
A. Lens ratio
B. Focal point
C. F-stop
A
B. Focal point
2
Q
Shorter focal points provide ____ and less ____.
A
a wider field of view; less magnification
3
Q
Longer focal points provide ____ and more ____.
A
shorter fields of view; greater magnification
4
Q
Focal length is measured in ___.
A. inches
B. millimeters
C. a ratio
A
B. millimeters
5
Q
What does the ratio on the end of a lens mean?
A
It is the maximum aperture of the lens.
