Halving the focal length of a telephoto lens, while holding aperture size constant, will change the ...

Author Question: Halving the focal length of a telephoto lens, while holding aperture size constant, will change the ... (Read 29 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

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.