curvature of field
Quick Summary
Curvature of field is an optical defect where points on an object plane perpendicular to the axis are imaged on a curved surface instead of a flat plane. This aberration, known as Petzval curvature, results in a curved image field without a loss of definition, meaning all lines remain sharp.12
The effect can be mitigated by introducing astigmatism, but anastigmat lenses aim to minimize Petzval curvature by combining strong negative elements of low-index glass with positive elements of high-index glass.2
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aberrationCurvature of field and distortion refer to the location of image points with respect to one another. Even though the former three aberrations may be corrected for in the design of a lens, these two aberrations could remain. In curvature of field, the image of…
Read MoreCurvature of field and distortion refer to the location of image points with respect to one another. Even though the former three aberrations may be corrected for in the design of a lens, these two aberrations could remain. In curvature of field, the image of…
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technology of photographyAberrationsCurvature of field is present when the sharpest image is formed not on a flat plane but on a curved surface. Astigmatism occurs when the lens fails to focus image lines running in different directions in the same plane; in a picture of a rail…
Read MoreCurvature of field is present when the sharpest image is formed not on a flat plane but on a curved surface. Astigmatism occurs when the lens fails to focus image lines running in different directions in the same plane; in a picture of a rail…
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