{"id":12419,"date":"2018-08-20T06:32:38","date_gmt":"2018-08-20T10:32:38","guid":{"rendered":"http:\/\/phsc.ca\/camera\/?p=12419"},"modified":"2018-08-19T22:53:58","modified_gmt":"2018-08-20T02:53:58","slug":"rapid-rectilinear-lens-redux","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/rapid-rectilinear-lens-redux\/","title":{"rendered":"rapid rectilinear lens redux"},"content":{"rendered":"<div id=\"attachment_12423\" style=\"width: 235px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/phsc.ca\/camera\/wp-content\/uploads\/2018\/08\/20180818-230205-DSC07031-lg.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12423\" class=\"size-full wp-image-12423\" src=\"http:\/\/phsc.ca\/camera\/wp-content\/uploads\/2018\/08\/20180818-230150-DSC07029-sm.jpg\" alt=\"\" width=\"225\" height=\"149\" \/><\/a><p id=\"caption-attachment-12423\" class=\"wp-caption-text\">BECK SYMMETRICAL LENS<\/p><\/div>\n<p><strong>Toronto<\/strong>. Turns out the <a href=\"https:\/\/en.wikipedia.org\/wiki\/History_of_photographic_lens_design\">choice of glass plus the lens design makes a rapid rectilinear<\/a>! Both the two wide angles lenses mentioned the other day predate the release of the Rapid Rectilinear (or Aplanat in Germany). R &amp; J Beck (earlier Smith, Beck and Beck \u00a0and later just plain Beck) was a well known British optical house which designed, manufactured and sold microscopes as well as camera lenses. <a href=\"https:\/\/en.wikipedia.org\/wiki\/R_%26_J_Beck\">Check Wikipedia entry here<\/a>. <a href=\"http:\/\/camera-wiki.org\/wiki\/Beck\">Check camera-wiki site here<\/a>.<\/p>\n<p>The lens I have is a brass BECK SYMMETRICAL lens, made around 1900, and a popular rapid rectilinear design often found on British cameras of the period (usually Ensign or Thornton-Pickard models). The date of manufacture is a bit vague at best. My lens is about a 10 inch focal length with an aperture from f\/8 to f\/45.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Toronto. Turns out the choice of glass plus the lens design makes a rapid rectilinear! Both the two wide angles lenses mentioned the other day predate the release of the Rapid Rectilinear (or Aplanat in Germany). R &amp; J Beck &hellip; <a href=\"https:\/\/phsc.ca\/camera\/rapid-rectilinear-lens-redux\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40],"tags":[2147,1000,58,249,2149,1145,2148],"class_list":["post-12419","post","type-post","status-publish","format-standard","hentry","category-lens","tag-beck","tag-england","tag-history","tag-london","tag-r-j-beck","tag-rapid-rectilinear","tag-symmetrical"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/12419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/comments?post=12419"}],"version-history":[{"count":4,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/12419\/revisions"}],"predecessor-version":[{"id":12433,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/12419\/revisions\/12433"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=12419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=12419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=12419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}