Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the...

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Lenses Are classified by their Focal Length

Transcript of Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the...

Page 1: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

LensesAre classified by their Focal Length

Page 2: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Focal LengthThe distance from the optical center of a lens to the front surface of the imaging device.

Page 3: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Short Focal Length

Wide Angle View

Page 4: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Short Focal LengthEXAMPLE

Entire Football Team

Page 5: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Long Focal Length

Narrow Angle View

Page 6: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Long Focal Length

EXAMPLEOne Football Player

Page 7: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Zoom LensVariable Focal Length

Page 8: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Zoom RangeHow close to how far a lens can see

Page 9: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Lens SpeedHow much light can pass through a lens

Page 10: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Fast LensLets a great amount of light to pass through

Page 11: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Fast LensUse in the evening, when there isn’t much light.

For low light settings

Page 12: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Slow LensLets a small amount of light to pass through

Page 13: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Slow LensUse this on bright, sunny days

For bright light settings

Page 14: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

IrisAdjustable lens opening mechanism

Page 15: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

ApertureHole in center of irisMeasured by f-stops

Page 16: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

ApertureSimilar to the pupil of your eye

Page 17: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

ApertureCan adjust larger or smaller depending on the amount of light

Page 18: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

ApertureWhat type of aperture opening would you use for a sunny day?

Page 19: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

ApertureWhat type of aperture opening would you use for a dark room with only a candle for light?

Page 20: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

Auto IrisMany cameras have auto iris

Adjusts automatically depending on setting

Page 21: Lenses Are classified by their Focal Length. The distance from the optical center of a lens to the front surface of the imaging device.

FocusWhen subject in viewfinder is sharp and clear.