{"id":162613,"date":"2023-10-26T21:14:18","date_gmt":"2023-10-26T20:14:18","guid":{"rendered":"https:\/\/www.techweekmag.com\/?p=162613"},"modified":"2023-10-27T11:37:51","modified_gmt":"2023-10-27T10:37:51","slug":"canon-patents-for-35mm-f1-2-and-12mm-f1-2-lenses","status":"publish","type":"post","link":"https:\/\/www.hifiratings.com\/tech\/photo\/canon-patents-for-35mm-f1-2-and-12mm-f1-2-lenses\/","title":{"rendered":"Canon patents for 35mm F1.2 and 12mm F1.2 lenses"},"content":{"rendered":"<p><strong>The Canon RF 35mm f\/1.2L USM<\/strong>\u00a0has been on the RF optics roadmap for a long time, almost since the introduction of the system.\u00a0And\u00a0a patent for it,\u00a0among others, appeared 2 years ago, but the lens was never released.<\/p>\n<p>Now, the\u00a0Asobinet\u00a0resource has information about two new patents describing the optical design of lenses, including 1.2 \/ 35.<\/p>\n<h2>Canon 35mm f\/1.2<\/h2>\n<p><strong>\u00a0<\/strong><strong><a class=\"zoom \" title=\"Canon 35mm f\/1.2\" href=\"https:\/\/www.hifiratings.com\/tech\/wp-content\/uploads\/2023\/06\/68_techweek.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" title=\"Canon 35mm f\/1.2\" src=\"https:\/\/www.hifiratings.com\/tech\/wp-content\/uploads\/2023\/06\/68_techweek.jpg\" alt=\"\" width=\"650\" height=\"481\" \/><\/a><\/strong><\/p>\n<ul>\n<li>Focal Length: 33.53mm<\/li>\n<li>Aperture: F\/1.30<\/li>\n<li>Half FOV: 32.83\u00b0<\/li>\n<li>Image Height: 21.64mm<\/li>\n<li>Overall length: 61.97mm<\/li>\n<li>Back focus: 0.29mm<\/li>\n<\/ul>\n<p>The same patent also shows a fast ultra wide-angle prime lens with the same short back focus distance.<\/p>\n<h2>Canon 12mm f\/1.2<\/h2>\n<p><strong><a class=\"zoom \" title=\"Canon 12mm f\/1.2\" href=\"https:\/\/www.hifiratings.com\/tech\/wp-content\/uploads\/2023\/06\/69_techweek.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" title=\"Canon 12mm f\/1.2\" src=\"https:\/\/www.hifiratings.com\/tech\/wp-content\/uploads\/2023\/06\/69_techweek.jpg\" alt=\"\" width=\"650\" height=\"554\" \/><\/a><\/strong><\/p>\n<ul>\n<li>Focal Length: 12.40mm<\/li>\n<li>Aperture: F\/1.30<\/li>\n<li>Half FOV: 32.82\u00b0<\/li>\n<li>Image height: 8.00 mm<\/li>\n<li>Overall length: 21.76mm<\/li>\n<li>Back focus: 0.44mm<\/li>\n<\/ul>\n<p><strong>* * *<\/strong><\/p>\n<p>In the description of the optical formulas, the f \/ 1.3 aperture appears, but if they reach real products, they will most likely be rounded up to the usual f \/ 1.2 or f \/ 1.4.<br \/>\nSomething else is more interesting.\u00a0If you paid attention, the description gives extremely small back focus values \u200b\u200b\u200b\u200bfor both lenses (0.29 and 0.44 mm), which casts doubt on the possibility of their use with consumer cameras.\u00a0Most likely, this is still optics for industrial cameras with a special mechanism for bringing the lens closer to the sensor to the working distance after installation on the camera.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Canon RF 35mm f\/1.2L USM\u00a0has been on the RF optics roadmap for a long time, almost since the introduction of the system.\u00a0And\u00a0a patent for it,\u00a0among others, appeared 2 years ago, but the lens was never released. Now, the\u00a0Asobinet\u00a0resource has information about two new patents describing the optical design of lenses, including 1.2 \/ 35. [&hellip;] <a class=\"g1-link g1-link-more\" href=\"https:\/\/www.hifiratings.com\/tech\/photo\/canon-patents-for-35mm-f1-2-and-12mm-f1-2-lenses\/\">More<\/a><\/p>\n","protected":false},"author":10404,"featured_media":162618,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[651],"tags":[779],"class_list":["post-162613","post","type-post","status-publish","format-standard","has-post-thumbnail","category-photo","tag-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/posts\/162613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/users\/10404"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/comments?post=162613"}],"version-history":[{"count":0,"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/posts\/162613\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/media\/162618"}],"wp:attachment":[{"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/media?parent=162613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/categories?post=162613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hifiratings.com\/tech\/wp-json\/wp\/v2\/tags?post=162613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}