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MBA.Graduate Psychology,PHD in HRM
Strayer,Phoniex,
Feb-1999 - Mar-2006
MBA.Graduate Psychology,PHD in HRM
Strayer,Phoniex,University of California
Feb-1999 - Mar-2006
PR Manager
LSGH LLC
Apr-2003 - Apr-2007
Discussion question
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.
1. Explain what happens to the focusing distance y as the object moves far away from the lens.
2. Explain what happens to the focusing distance y as the object moves closer and closer to the lens.
3. In general, why is it not possible to cross a vertical asymptote?
My Answer
F is the focal length// x be the object distance// y is the distance
When object moves far away from lens
x→∞
1/x→0
1/65 = 0 + 1/y
y = 65
When object moves closer and closer to the object
x→0
1/x→∞
It is not possible to cross a vertical asymptotes because y is not defined.
Starting at “F is the focal length” and ending with “because y is not defined” is my answer. Below are some questions my instructor asked me to re answer concerning the answers I gave. Could someone please help me answer my instructors re questions please.
1.Describe the impact on y when x in increased
2.Describe the impact on y when x is decreased
3.What is meant by the following: “It is not possible to cross a vertical asmptotes because y is not defined.”
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