{"id":254,"date":"2013-01-06T17:02:27","date_gmt":"2013-01-06T16:02:27","guid":{"rendered":"https:\/\/www.reflectionofmind.com\/?p=254"},"modified":"2018-05-14T16:47:20","modified_gmt":"2018-05-14T15:47:20","slug":"altglas-neuzugang","status":"publish","type":"post","link":"https:\/\/www.reflectionofmind.com\/en\/2013\/01\/altglas-neuzugang\/","title":{"rendered":"New old lens"},"content":{"rendered":"

For some long time it was on my wish list. And occasionally I could shoot one on eBay for a somewhat reasonable price (how much exactly I won’t tell you ). A Carl Zeiss Jena Flektogon 35mm in the F2,4 Multicoated version.<\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mmCarl Zeiss Jena 2,4\/35mm<\/p><\/div><\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm mit K\u00f6cher<\/p><\/div>\n

Stupidly I didn’t read the description of the article. First this lens has two versions, one with the Praktica B bayonet and one with M42 screw mount. It is nearly to adapt the Practica bayonet at a Canon EOS because the Praktica has a shorter distance between focal pane and the mount. Fortunately it was M42: Second this lens like to get the diaphragm stuck due to oily diaphragm blades. And this lens did *OF COURSE* not work. After searching the internet I found this site http:\/\/www.kolumbus.fi\/uusilehto<\/a> and found out, that this lens isn’t too difficult to repair. Because the repair procedure is well described in above link I don’t post own images. Anyhow, some remarks to that. At my lens the front\u00a0 part of the aperture mechanic stuck and didn’t wanted to be removed. So I dismounted only the front lens group what was pretty easy and left the diaphragm mechanism in the front barrel. For cleaning I used cleaning benzine (the same as used for lighters). I washed the diaphragm twice with plenty of it. After reassembling the mechanic was still a little sticky. Later I disassembled and cleaned the lens again, now the diaphragm works absolutely smooth again \ud83d\ude42<\/p>\n

The results:<\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, Blende 2,4<\/p><\/div>\n

Aperture full open. Slightly blurry in the corner. Here some 100% crops:<\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, Blende 4, 100% Ausschnitt<\/p><\/div>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, f 4, 100% Crop<\/p><\/div>\n

The sharpnes is OK but the contrast is a little low. At f 4:<\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, f 4<\/p><\/div>\n

Looks much better. At\u00a0 f 8:<\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, Blende 8<\/p><\/div>\n

Again some 100% crops:<\/p>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, f 8, 100% crop<\/p><\/div>\n

\"Carl<\/a>

Carl Zeiss Jena 2,4\/35mm, f 8, 100% crop<\/p><\/div>\n

Now its crispy sharp up to the corners. So don’t panic if you get on with sticky diaphragm blades. It is really easy to repair.<\/p>","protected":false},"excerpt":{"rendered":"

For some long time it was on my wish list. And occasionally I could shoot one on eBay for a somewhat reasonable price (how much exactly I won’t tell you ). A Carl Zeiss Jena Flektogon 35mm in the F2,4 Multicoated version.<\/p>\n","protected":false},"author":2,"featured_media":255,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[99,98,100],"tags":[109,159,356,156,101,157,158,160,155],"class_list":["post-254","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dslr","category-fotografie","category-objektive","tag-altglas","tag-flektogon","tag-fotografie","tag-jena","tag-objektiv","tag-optik","tag-reparatur","tag-test","tag-zeiss"],"_links":{"self":[{"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/posts\/254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/comments?post=254"}],"version-history":[{"count":5,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/posts\/254\/revisions"}],"predecessor-version":[{"id":752,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/posts\/254\/revisions\/752"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/media\/255"}],"wp:attachment":[{"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/media?parent=254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/categories?post=254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.reflectionofmind.com\/en\/wp-json\/wp\/v2\/tags?post=254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}