Description
In photography fixed focal length means that the focal length is not adjustable. Photographers are unable to zoom in and out on a particular subject when using such a lens. Not being able to easily zoom in on a subject might seem like a huge disadvantage. But such lenses are credited with being able to produce much higher quality pictures in controlled settings.
In order for a film camera with a fixed focal length F to focus on an object located a distance x from the lens, the film must be placed a distance y behind the lens. F, y, and x are related as follows
Now suppose a camera has a lens with focal length F = 65.
- Explain what happens to the focusing distance y as the object moves far away from the lens.
- Explain what happens to the focusing distance y as the object moves closer and closer to the lens.
- In general, why is it not possible to cross a vertical asymptote?
Explanation & Answer
Attached.
Surname 1
Name
Supervisor
Course
Date
Solution
Given that,
Then,
1 1 1
and F=65
F x y
1 1 1
1
yx
or
65 x y
65
xy
This now translates to, xy = 65y+65x
xy- 65y=65x
Therefore, y(x...