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What determine a prime lens and what the f stops are

What determine a prime lens and what the f stops are
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3/21/2018
Russell A.
Russell A., Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 6,336
Experience: 30 years of experience as a TV station technician gives me a unique understanding of technical equipment issues.
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Hi,

Generally a Prime lens is a non-zoom lens (single focal length) usually 50mm. Inexpensive ones have f stops from 2.8 to 16. Faster, more expensive ones start as low as 1.2 to about 22.

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Russell A.
Russell A., Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 6,336
Experience: 30 years of experience as a TV station technician gives me a unique understanding of technical equipment issues.
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