« previous next »

Author Question: Halving the focal length of a telephoto lens, while holding aperture size constant, will change the ... (Read 78 times)

rachel9

  • Sr. Member
  • ****
  • Posts: 495
on: Jul 28, 2018
Halving the focal length of a telephoto lens, while holding aperture size constant, will change the light intensity admitted to the film by what factor?
 a. 0.50
  c. 0.25
  b. 2.0
  d. 4.0

Question 2

Doubling the aperture diameter of a camera lens will change the light intensity admitted to the film by what factor?
 a. 4.0
  c. 0.50
  b. 0.25
  d. 2.0


C.mcnichol98

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Muscle length versus isometric force Muscle length versus isometric force
The relationship between the height of the firing line and length of the spark line can be ... The relationship between the height of the firing line and length of the spark line can be ...
Genome size Genome size
Historical Climate Change "تغير المناخ التاريخي" Historical Climate Change "تغير المناخ التاريخي"
Your nose runs like a leaky faucet and turns beet red from constant wiping Your nose runs like a leaky faucet and turns beet red from constant wiping
Opener A field of pumpkins, where size is under the influence of additive alleles Opener A field of pumpkins, where size is under the influence of additive alleles
Video: Five phases of cardiac cycle & Atrial contraction

For a complete list of videos, visit our video library