The term “parfocal lens” has only really come into common usage amongst the general population over the last decade or so as our DSLRs and mirrorless cameras have allowed us to start shifting more towards shooting video content. But what exactly are they? And what’s the big deal?
As this video from Michael the Maven explains, parfocal lenses are zoom lenses, but they are zoom lenses which keep their focus distance through the entirety of their focal length range. What this means is that as you recompose for a tighter or wider shot of your subject, you don’t have to refocus the lens. It stays exactly where it was.
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