File:Out-of-focus image of a spoke target..svg Defocus
File:HartmannShack 1lenslet.svg Tilt
File:Spherical aberration 3.svg Spherical aberration
File:Astigmatism.svg Astigmatism
File:Lens coma.svg Coma
File:Barrel distortion.svg Distortion
File:Field curvature.svg Petzval field curvature
File:Chromatic aberration lens diagram.svg Chromatic aberration
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