F-Number & Spherical Aberration: Uncovering the Relationship

Thread starter russel.arnold
Start date Feb 12, 2011
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Aberration Relationship Spherical

AI Thread Summary

The F-number of a lens significantly influences the degree of spherical aberration, with faster lenses (lower F-numbers) exhibiting greater levels of this aberration. Specifically, an F2 lens is likely to have worse spherical aberration compared to an F5, which in turn is worse than an F10. This relationship suggests that as the F-number increases, the impact of spherical aberration decreases. While there may be formulas to quantify this relationship, they were not discussed in detail. Understanding this connection is crucial for optimizing lens performance in photography and telescope design.

Feb 12, 2011

russel.arnold

how F-number of a lens and spherical aberration are related?

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Feb 14, 2011

davenn

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the faster the lens (or parabolic mirror in a telescope) the greater the probability of spherical aberration

f2 worse aberration than f5 which would be worse than a f10
there may be formula for working it out ... I don't know them ;)

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