Buzz
A Parfocal lens, whether a single lens or a zoom lens system, possesses the unique ability to maintain focus throughout focal length adjustments. This feat is achieved through specialized designs or intricate focusing mechanisms.In the realm of microscopy, the Parfocal lens plays a crucial role. Imagine altering the magnification of a microscope lens from 10X to 40X without the need for refocusing.
In the realm of photography, its significance wanes; those wielding zoom lenses like 24-70mm or 70-200mm will find them more convenient and expedient. However, lens manufacturers often neglect this feature as it holds little appeal to the general user, thereby averting the escalation of lens prices.It commonly manifests within lenses of integrated lens cameras.In the domain of Cinematography, it holds considerable sway; the majority of cine zoom lenses boast this feature to cater to shoots necessitating focal length adjustments mid-filming. Its importance is tantamount to the aforementioned non-breathing capability.In the video below, they demonstrate and explain in great detail with Fuji's $250,000 lens.
