Author Question: Using a camera with a fixed focal length lens, how will increasing the f-number affect the depth of ... (Read 169 times)

formula1 · **on:** Jul 28, 2018

Using a camera with a fixed focal length lens, how will increasing the f-number affect the depth of focus and the intensity of the light reaching the ccd (or film)?
a. The depth of focus will decrease but the intensity of light reaching the ccd will increase.
b. The depth of focus will increase as will the intensity of light reaching the ccd. c. The depth of focus will increase but the intensity of light reaching the ccd will decrease.
d. The depth of focus will decrease as will the intensity of light reaching the ccd.

Question 2

Unlike the refracting astronomical telescope discussed in the text that gives an inverted image, Galileo's telescope produced an upright image. What did he do differently to accomplish this?
a. He rotated the barrel of the telescope 180.
b. He used diverging lenses for both the eyepiece and the objective.
c. He used a diverging lens for the eyepiece.
d. He used a diverging lens for the objective.