auto focus etymology

Etymology:

• Auto: Greek, meaning "self"
• Focus: Latin, meaning "hearth" or "place of fire"

Meaning:

• A system in a camera that automatically adjusts the lens to ensure that objects at different distances are in sharp focus.

Origin:

The term "auto focus" was coined by Kodak in the late 1970s. The first commercially available SLR camera with auto focus was the Minolta SR-7 in 1981.

Historical Development:

• 1930s: Early attempts at auto focus systems used ultrasonic or infrared sensors.
• 1970s: Kodak developed the first practical auto focus system using phase detection.
• 1980s: Auto focus systems became widely adopted in SLR cameras and other camera types.
• 1990s: Auto focus systems became faster and more accurate, using new technologies like TTL phase detection and contrast detection.
• 21st Century: Auto focus systems continue to improve, with the introduction of features like eye detection and subject tracking.

Types of Auto Focus Systems:

There are several types of auto focus systems, including:

• Phase Detection: Measures the phase shift of light waves to determine the distance to an object.
• Contrast Detection: Compares the contrast of light in different parts of the image to find the point of sharpest focus.
• Hybrid Auto Focus: Combines both phase detection and contrast detection for improved speed and accuracy.
• Laser Auto Focus: Uses a laser beam to determine the distance to an object.
• Ultrasonic Auto Focus: Uses ultrasound waves to measure the distance to an object.

auto focus relate terms

• focus

  Etymology Latin focus hearth fireplace Proto Indo European bhew k to shine M

• auto

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• concentrate

  Etymology Latin concentrare to bring together centralize Meaning To focus on

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• nerf

  Etymology The term nerf is derived from the German word nerfe which in turn is belie

• lite

  Etymology derived from the Greek word lithos meaning stone Meaning noun a smal

• cynosure

  Etymology cyno Greek dog sura Greek tail Meaning A person or thing that is t

• terminus

  Etymology Latin terminus meaning boundary limit or milestone From Proto Indo

• pole

  Etymology The word pole derives from the following roots Middle English pol Old

• emanation

  Etymology Late Latin emanatio flowing forth emanation Latin emanare to flow forth

• catechesis

  Etymology The word catechesis is derived from the Greek word katēchēsis which mean

• confusion

  Etymology The word confusion is derived from the Latin word confusio which means a