Correlation Between Focal Length, Angle, And Perspective - Samsung NX30 User Manual

Concepts in Photography
Correlation between focal length, angle,
and perspective
Focal length, which is measured in millimeters, is the distance between
the middle of the lens to its focal point. It affects the angle and perspective
of captured images. A short focal length translates into a wide angle,
which allows you to capture a wide shot. A long focal length translates
into a narrow angle, which allows you to capture telephoto shots.
Short focal length
wide angle
wide-angle lens
wide shot
Long focal length
narrow angle
Look at these photos below and compare the changes.
18 mm angle 55 mm angle
Normally, a lens with a wide angle is suitable for shooting landscapes and a lens
with a narrow angle is recommended for shooting sports events or portraits.
telephoto lens
telephoto shot
200 mm angle
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