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Three f-stops drive a six blade lens iris. Picking a stop turns every blade on its own pivot, one after another, so the opening closes or widens and the light through it dims or brightens.
Also known as: camera aperture radio, lens iris css animation, f stop selector, aperture blades css.
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Everything you see above is live. Basic and Pro include every premium piece, with the HTML and CSS ready to copy, plus the Tailwind version where there is one and Motions in Claude Code on Pro.
--rad-color on the element or a parent.
Currently previewing #3b82f6.--rad-size. Every other dimension is in
em, so the whole thing scales together. Currently previewing 18px.transition or animation
shorthand. Staggered delays are relative, so they keep their rhythm.