Middle left stick

Calculator stick

Comatic aberrationComatic aberration is in some ways similar to spherical aberration but is caused by the difference in distance of the incident light from the optical axis and a difference in magnification. Spherical aberration is caused by a difference in focused point.

Comatic aberration, or coma, causes off-axis rays of light in the object plane to create a trailing "comet-like" blur trailing directly away from the optical axis. It is this comet-like effect that gives rise to the name "coma". The aberration is most noticeable when a lens system is misaligned. A lens with severe coma typically produces a sharp image at the centre of the image field with decreasing sharpness and image quality toward the periphery.

The images on the right simulate the effects of severe coma.

ennlfrdeelhiitjaes

Please Support OPS

Donate using PayPal
Amount:
Go to top