Unit 1.7 Flashcards by Rock S

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Q

What usually causes lines that bend or curve at the image plane?

A

Lens distortion

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Q

What forms color fringes around image points?

A

Chromatic aberration

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Q

What causes horizontal lines to be out of focus when vertical lines are in focus?

A

Astigmatism

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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

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Q

Why does a lens manufacturer incorporate spherical aberration into a portrait lens?

A

To give softness to the image.

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Q

Which type of distortion causes straight lines to give a barrel effect?

A

Curvilinear distortion

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