{"id":34375,"date":"2026-06-17T01:03:41","date_gmt":"2026-06-17T05:03:41","guid":{"rendered":"https:\/\/phsc.ca\/camera\/?p=34375"},"modified":"2026-06-16T19:40:57","modified_gmt":"2026-06-16T23:40:57","slug":"now-open-really-really-wide","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/now-open-really-really-wide\/","title":{"rendered":"now open really, really wide"},"content":{"rendered":"
\"\"<\/a>

a couple of very old wide angle lenses for field cameras<\/p><\/div>\n

Toronto<\/strong>. \u00a0In issue 27-5 of our journal, Bill Belier in his column “A Treasure From My Collection”, featured my small collection of Protars which I had obtained from Bill some time earlier.<\/p>\n

My part of Bill’s article begins, “In September 1986, I bought a small brass lens with a\u00a0black enamel face from Bill Belier. It was a c1910 Protar\u00a0made by Carl Zeiss Jena<\/i>.<\/p>\n

“The next month, I bought five more of the little lenses from Bill, these all made under licence by Bausch & Lomb in Rochester, NY.<\/p>\n

“Then a year later in October, 1987 Bill sold me the oldest of the group \u2013a Zeiss\u00a0<\/i>Anastigmat <\/i>made by Bausch & Lomb.<\/p>\n

“I was intrigued to find out the history and manufacturing sequence of the lenses. They all have an f\/18 aperture and are extreme wide-angle of various focal lengths. Anastigmat <\/i>turned out to be the early\u00a0name for the Protar <\/i>lenses which were the first commercially\u00a0successful lenses to conquer astigmatism. These wide angle\u00a0versions were made for over half a century.<\/p>\n

“As the fiftieth anniversary of photography (1889) approached, the lenses designed for cameras were still slow and suffered from a variety of aberrations. Astigmatism was a particularly annoying flaw, causing an image to become increasingly blurred moving towards the edge of the plate.<\/p>\n

“To minimize this flaw, lenses were made with relatively long focal lengths and small apertures. A solution to the problem came, not from the photographic industry, but from the world of microscopes.” ….<\/p>\n

Members read all of Bill’s column and enjoyed the illustrations in the pdf file for issue 27-5 \u00a0 \u00a0(March 2002) on the free members-only thumb drive. See ‘Membership’ at right and above to join or renew. Questions may be emailed to member@phsc.ca<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Toronto. \u00a0In issue 27-5 of our journal, Bill Belier in his column “A Treasure From My Collection”, featured my small collection of Protars which I had obtained from Bill some time earlier. My part of Bill’s article begins, “In September … 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":[398,279,1162],"class_list":["post-34375","post","type-post","status-publish","format-standard","hentry","category-history","tag-camera","tag-lenses","tag-wide-angle"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/34375","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=34375"}],"version-history":[{"count":3,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/34375\/revisions"}],"predecessor-version":[{"id":34379,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/34375\/revisions\/34379"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=34375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=34375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=34375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}