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Back in the olden days, there used to be an iris in (or close to) the lens of the camera. A clever arrangement of several metal foils that closed as a circle.
The magnitude of this opening is known as the f-stop. It is the ratio of the distance between iris and photographic film; to the diameter of the opening. Typical numbers would range from 1 to 32. This feature determines the depth of field of the lens. i.e. the distance range over which the scene is in approximate focus.
What else can I help you with?
What are security cameras called?
The HD IP camera is also called high-definition IP network camera and megapixel IP camera. And the majority of these IP cameras are used for exquisite monitoring.
What were the first cameras called?
camera obscura
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The opening of a volcano is called the vent.The opening of a volcano is called a vent.
What is the opening to the lower deck on a boat called?
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What is the opening in the epidermis called?
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What was a cameras called in the olden days?
the hasnat box
What is located at the opening of a volcano?
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What is a volcano opening called?
It is called the crater
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The opening is called an estuary.
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Olivia actually sings the opening song, but I don't know what it is called.
