numbers on a camera lens Archives - Valerie Hayken Photography and Design

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Camera Lens Basics – Numbers on a Camera Lens

What are the numbers on a camera lens?

Camera Lens Terms Standard: Focal length roughly equivalent to what the eye sees. Ex. Full Frame DSLR = 40mm; APS-C = 35mm. Film SLR = 50mm. Wide: Focal length under standard lens Ex. 24mm f/1.4 Telephoto: Focal length over standard lens. Ex. 100mm f/2.8 Prime: Fixed focal length, any mm. Ex. 14mm, 85mm, 100mm Zoom:
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