Astigmatism
Astigmatism in lenses causes images to blur along one axis more than the other. It results from the lens having different focal lengths in different meridians. This makes it hard to get a uniformly sharp focus across an image.
Optical astigmatism can greatly affect the quality of an image, depending on the orientation of the lens elements. It is most noticeable when photographing straight lines, which can appear soft or wavy. Advanced lens designs use multiple aspherical surfaces or specially shaped elements to correct for astigmatism.
Aberration of Lens
Aberration of the lens refers to the failure of a lens to produce a perfect image. It occurs due to the lens’s geometry and light’s physical properties. There are several lens aberrations, each affecting the image in different ways.
In this article, we will discuss lens aberration, its types, corrections methods, and many more in detail.
Table of Content
- Lens Aberration
- Types of Lens Aberrations
- Curvature of Field and Distortion
- Combination of 2 Lenses to Reduce Chromatic Aberration