An object is brought into focus using the 10*objective lens. When the 40* objective lens is moved into position, only a minor adjustment using the fine focus adjustment is required to bring it clearly into focus. What is the term used to describe lenses with this feature?

Question

Quizplus · Accepted Answer

Lenses with the ability to maintain focus when switched from one objective to another without extensive adjustments are called parfocal lenses.

An Object Is Brought into Focus Using the 10*objective Lens