Definition

The state or quality of lenses being able to maintain focus when switching between different magnifications.

Example

The parfocality of the microscope allows for easy transitions between objectives without needing to refocus.

Conversation

Did you ever hear about the concept of parfocality in microscopes?

Yeah, it means you can switch between objectives without having to refocus, right?

Exactly! It makes observing samples so much easier and efficient.

I wish all devices had that feature; it would save a lot of time.

Synonyms & Antonyms

Root Explanation

Parfocality is formed from "par-" (meaning equal) and "focalis" (from Latin, meaning pertaining to a focus). The term refers to the quality of lenses that maintain focus when changing from one magnification to another, thus keeping the image in focus at equal distances.

Memory Tip

Think of 'equal' ('par-') focus ('focalis') when using different lenses — that's why parfocality means maintaining focus across magnifications.

Visually Confused Words