What Does Parfocal Mean?

A parfocal lens is a lens that stays in focus when magnification/focal length is changed. There is inevitably some amount of focus error, but too small to be considered significant.

What do we mean by parfocal?

Parfocal means that when one objective lens is in focus, then the other objectives will also be in focus.

What does parfocal mean chegg?

Experts are tested by Chegg as specialists in their subject area. We review their content and use your feedback to keep the quality high. 100% 5. Parfocal means being or having lenses or lens sets (such as eyepieces) with the corresponding focal points all in the same plane.