parfocality
/ˌpɑrfoʊˈkæləti/
noun
- The property of a lens system (such as a microscope or camera) in which multiple lenses stay in focus relative to each other when changing magnification or switching lenses.
- The microscope's parfocality allows you to switch from the 10x to the 40x lens without refocusing.
- Good parfocality is essential for efficient laboratory work, saving time during sample analysis.
- Camera zoom lenses with high parfocality maintain sharp focus throughout the entire zoom range.