Pincushion Distortion
The opposite of barrel distortion: straight lines bow inward toward the center, with stretched corners. It occurs in telephoto lenses and some old cathode-ray displays.
Spot it
- 01Inward curved edges
- 02Pulled-out corners
- 03Pinched frame sides
Why it happens
Each pixel's distance from the center is scaled by a factor that grows with radius, so outer areas are magnified more than the center and lines bow inward.
Recreate it in Pixio
Image edit prompt“Apply pincushion lens distortion to this image: straight lines bowing inward toward the center, corners stretched outward into sharp points, a compressed middle, sides of the frame pinched like a curved cushion, natural photographic color. Keep the original subject and composition.”
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