{"id":21124,"date":"2021-07-27T01:16:06","date_gmt":"2021-07-27T05:16:06","guid":{"rendered":"https:\/\/phsc.ca\/camera\/?p=21124"},"modified":"2021-07-22T01:03:09","modified_gmt":"2021-07-22T05:03:09","slug":"a-new-way-to-direct-light","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/a-new-way-to-direct-light\/","title":{"rendered":"a new way to direct light"},"content":{"rendered":"
\"\"<\/a>

Ad for original (Model A) Norwood Director<\/p><\/div>\n

Toronto<\/strong>. Incident or reflected light,<\/a> that is the question. This advertisement touted a new way to measure light, especially<\/em> critical in the early days of low sensitivity, somewhat contrasty colour film materials.<\/p>\n

Instead of reading reflected<\/em> light values from selected shadow and highlight areas, the Norwood Director<\/a> used a translucent hemisphere to gather incident<\/em> light falling on the subject. The light value could then be translated into a correct camera setting giving optimal negative and transparency exposures. No wasted shots.<\/p>\n

The major reflected light meter makers responded by selling attachments like the Weston ‘Invercone<\/a>‘ (I have one) to offer readings of incident as well as reflected light. Some years later when sensitive CdS cells arrived on the scene, better meters like the Gossen Luna Pro<\/a> offered a means to take either reading as well (Gossen had a sliding hemispherical ball, tinier than the Norwood’s to accomplish incident light readings).<\/p>\n

This ad from the June 1947 issue of Popular Photography<\/a> is courtesy of good friend and photo historian George Dunbar. The magazine link has been repeated for the convenience of the viewer.<\/p>\n","protected":false},"excerpt":{"rendered":"

Toronto. Incident or reflected light, that is the question. This advertisement touted a new way to measure light, especially critical in the early days of low sensitivity, somewhat contrasty colour film materials. Instead of reading reflected light values from selected … Continue reading →<\/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":[1944],"tags":[500,972,963,3767,3768,1507,852],"class_list":["post-21124","post","type-post","status-publish","format-standard","hentry","category-history","tag-accessories","tag-ad","tag-gossen","tag-incident-light-meter","tag-norwood","tag-popular-photgraphy","tag-weston"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/21124","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=21124"}],"version-history":[{"count":2,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/21124\/revisions"}],"predecessor-version":[{"id":21129,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/21124\/revisions\/21129"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=21124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=21124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=21124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}