Unit 1.7 Flashcards
1
Q
What usually causes lines that bend or curve at the image plane?
A
Lens distortion
2
Q
What forms color fringes around image points?
A
Chromatic aberration
3
Q
What causes horizontal lines to be out of focus when vertical lines are in focus?
A
Astigmatism
4
Q
What’s is caused by the inability of a lens to bring oblique rays of light to a common point with equal magnification and brightness?
A
Coma
5
Q
Why does a lens manufacturer incorporate spherical aberration into a portrait lens?
A
To give softness to the image.
6
Q
Which type of distortion causes straight lines to give a barrel effect?
A
Curvilinear distortion
