{"id":53563,"date":"2008-05-23T16:22:07","date_gmt":"2008-05-23T20:22:07","guid":{"rendered":"http:\/\/blog.ipcamerasupply.com\/?p=412"},"modified":"2016-02-05T18:16:47","modified_gmt":"2016-02-05T18:16:47","slug":"ipcs-word-of-the-day-f","status":"publish","type":"post","link":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/ipcs-word-of-the-day-f\/","title":{"rendered":"IPCS Word of the Day: F"},"content":{"rendered":"<p><strong>F<\/strong> = In optics, the f-number (sometimes called focal ratio, f-ratio, or relative aperture) of an optical system expresses the diameter of the entrance pupil in terms of the effective focal length of the lens; in simpler terms, the f-number is the focal length divided by the aperture diameter.  It is a dimensionless number that is a quantitative measure of lens speed, an important concept in photography.  Depth of field increases with f-number, as illustrated in the photos below:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-422\" title=\"f-stop\" src=\"\/blog\/voip-insider\/files\/2008\/05\/f-stop.jpg\" alt=\"f-stop\" width=\"430\" height=\"202\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>F = In optics, the f-number (sometimes called focal ratio, f-ratio, or relative aperture) of an optical system expresses the diameter of the entrance pupil in terms of the effective focal length of the lens; in simpler terms, the f-number is the focal length divided by the aperture diameter. It is a dimensionless number that [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1036],"tags":[],"class_list":["post-53563","post","type-post","status-publish","format-standard","hentry","category-ipcs-terminology"],"_links":{"self":[{"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/posts\/53563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/comments?post=53563"}],"version-history":[{"count":2,"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/posts\/53563\/revisions"}],"predecessor-version":[{"id":153843,"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/posts\/53563\/revisions\/153843"}],"wp:attachment":[{"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/media?parent=53563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/categories?post=53563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.voipsupply.com\/blog\/voip-insider\/wp-json\/wp\/v2\/tags?post=53563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}