{"id":7254,"date":"2016-06-09T17:07:06","date_gmt":"2016-06-09T17:07:06","guid":{"rendered":"http:\/\/chan.nds.hk\/blog\/?p=7254"},"modified":"2016-06-09T17:07:40","modified_gmt":"2016-06-09T17:07:40","slug":"kern-%e9%8f%a1%e9%a0%ad%e5%88%97%e8%a1%a81950s","status":"publish","type":"post","link":"https:\/\/chan.nds.hk\/blog\/?p=7254","title":{"rendered":"Kern \u93e1\u982d\u5217\u88681950’s"},"content":{"rendered":"

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kern\u7684c mount\u93e1\uff0c\u5f88\u591a\u6539\u8d70\u5f8c\u53e3\u5c31\u53ef\u4ee5\u653e\u4e0a35mm \u93e1\u982d\u3002\u6563\u666f\u5473\u9053\u5f88\u4e0d\u932f\u3002<\/p>\n

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\u5c24\u5176\u6709\u5bebmacro\u7684\u90a3\u4e00\u5806\u93e1\uff0c\u628ac mount\u6539\u8d70\uff0c\u5c31\u53ef\u4ee5cover fullframe\u76f8\u6a5f\uff0c\u597d\u73a9\u5f97\u5f88\u3002<\/p>\n

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In 1950, Kern-Paillard introduced a new line of lenses with a unique depth of field scale, termed "Visifocus". The Visifocus system consisted of a curved scale, indicated by a series of orange colored dots that appeared or disappeared when the diaphragm scale was stopped up or down. The dots provided a visual reference of the depth of field for different focus settings at each f-stop. Further innovations were made in 1956 with the introduction of the Bolex H-16 Reflex camera. The camera used a beam-splitting prism system to provide reflex viewing by diverting approximately 25% of the light entering the lens into the viewfinder. Although the H-16 Reflex used a standard C mount, the reflex prism (located behind the lens and in front of the film plane) affected the optical correction of lenses of 50mm focal lengths and shorter. Kern-Paillard introduced a line of "RX" mount lenses which were optically corrected for the Reflex camera. During the 1950s, Paillard adopted product codes for accessories and lenses. These were used to identify items for sales, repair and service purposes and seems to have been done away with by the early 60s. For the sake of historical reference, I've listed them below. Many of the same lenses were available in both standard (listed as "St." for all 16mm C mount cameras) and RX mount (For H-16 reflex cameras) and used different product codes. Apart from the letters "RX" appearing on some, they were otherwise identical in appearance.<\/p>\n

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  kern\u7684c mount\u93e1\uff0c\u5f88\u591a\u6539\u8d70\u5f8c\u53e3\u5c31\u53ef\u4ee5\u653e\u4e0a35mm \u93e1\u982d\u3002\u6563\u666f\u5473\u9053\u5f88\u4e0d\u932f\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[210,104,1],"tags":[1211,1084,1208],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7254"}],"collection":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7254"}],"version-history":[{"count":0,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7254\/revisions"}],"wp:attachment":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}