#fstop
Live, measured metrics for the hashtag #fstop from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #fstop
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-09-27 22:09 UTCNo measured public usage for #fstop in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-09-27 22:09 UTCNo related tags with measured usage found for #fstop.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-27 22:09 UTCNo recent public posts found for #fstop on Mastodon. Nothing measured, so nothing shown.
What “fstop” means
WikipediaAn f-number is a measure of the light-gathering ability of an optical system such as a camera lens. It is defined as the ratio of the system's focal length to the diameter of the entrance pupil. The f-number is also known as the focal ratio, f-ratio, or f-stop, and it is key in determining the depth of field, diffraction, and exposure of a photograph. The f-number is dimensionless and is usually expressed using a lower-case hooked f with the format f/N, where N is the f-number.
“F-number” on Wikipedia (CC BY-SA) →#fstop across platforms
every network with a public tag surfaceFollow #fstop straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/fstop