{"id":21446,"date":"2021-09-01T01:03:53","date_gmt":"2021-09-01T05:03:53","guid":{"rendered":"https:\/\/phsc.ca\/camera\/?p=21446"},"modified":"2021-08-28T23:34:43","modified_gmt":"2021-08-29T03:34:43","slug":"cats-eye","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/cats-eye\/","title":{"rendered":"cat’s eye"},"content":{"rendered":"
\"\"<\/a>

Ad for the Ermanox camera with a 100mm f\/2 Ernostar lens c 1924 or 5<\/p><\/div>\n

Toronto<\/strong>. Nearly a century ago, there was a race on to create a faster lens. Such a lens would allow photos \u00a0indoors and at night using natural light.<\/p>\n

In 1924 Ernemann announced the Ermanox<\/a> plate camera (4.5×6 cm) with a 100mm f\/2 Ernostar lens. Two years later the company was merged into Zeiss-Ikon and the camera was rebadged as a Zeiss-Ikon. Shortly after introduction, the camera was offered with a slightly shorter focal length lens about 1\/6th stop faster, the 85mm f\/1.8 Ernostar<\/a>.<\/p>\n

The camera was made famous by Dr Erich Solomon<\/a> a few years later. He became Germany’s first ‘photojournalist’. He later moved on to a Leica. You can see one here with a roll film back attached<\/a>.<\/p>\n

A tip of my hat to good friend and fellow photo historian, George Dunbar, for showing us this amazing advertisement. Today, you may wonder why all the fuss about an f\/2 or f\/1.8 lens. That is, until you realize how pathetically slow the media (glass plate or film) was at that time when ASA 100, the lowest ASA\/ISO these days, was considered incredibly fast!<\/p>\n","protected":false},"excerpt":{"rendered":"

Toronto. Nearly a century ago, there was a race on to create a faster lens. Such a lens would allow photos \u00a0indoors and at night using natural light. In 1924 Ernemann announced the Ermanox plate camera (4.5×6 cm) with a … 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":[398,3823,2295,3822,401,3821,2623],"class_list":["post-21446","post","type-post","status-publish","format-standard","hentry","category-history","tag-camera","tag-candid","tag-ernemann","tag-f-2","tag-lens","tag-solomon","tag-speed"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/21446","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=21446"}],"version-history":[{"count":6,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/21446\/revisions"}],"predecessor-version":[{"id":21450,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/21446\/revisions\/21450"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=21446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=21446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=21446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}