Lens and Films Flashcards

1
Q

Lens

A

Piece or pieces of optical glass shaped to focus an image of a subject.

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2
Q

Focal length

A

The distance from the lens to the focal plane when the lens is focused on infinity. Longer focal length = shallow depth of field; Closer to subject = less depth of field.

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3
Q

The higher the film speed (ISO)… ?

A

The more sensitive it is to light, and the more grain will result on the film.

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4
Q

What is ISO?

A

The ISO/ASA is the number type of film that determines the sensitivity of light. 200/400 ISO is moderate.

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