{"id":1105,"date":"2008-06-23T03:49:12","date_gmt":"2008-06-23T03:49:12","guid":{"rendered":"http:\/\/glaringnotebook.com\/?p=1105"},"modified":"2016-08-28T10:58:49","modified_gmt":"2016-08-28T10:58:49","slug":"quick-geek-out","status":"publish","type":"post","link":"https:\/\/glaringnotebook.com\/?p=1105","title":{"rendered":"Quick Geek Out"},"content":{"rendered":"<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo1.jpg\"><br \/>\nTamron 17-50mm F2.8 for Canon EF-S mount and the Tamron 17-50mm F2.8 for Sony A mount. The Tamron for Canon has a positively audible *zzzt* sound when focusing, from the in-lens motor, while the Sony version doesn&#8217;t as it is driven by the screw drive on the body. The Sigma 18-50mm F2.8 for Canon didn&#8217;t have such a loud in-lens motor, and could focus to 20 cm close, getting 1:3 macro! However, I was pretty sure that the subject was about 3cm close. The Tamron did only 27cm close.<\/p>\n<p>Yeo, who tested both, found the Tamron to be slightly sharper, and he didn&#8217;t notice the Tamron sound until I pointed it out.<\/p>\n<p>Interestingly, the Tamron 17-50mm F2.8 for Nikon F-mount has two versions &#8211; the old screw-driven one, and one labelled NEW which has a motor inside. The motorized version is reported to be slower, though:<br \/>\n<a href=\"http:\/\/shashinki.com\/blog\/2008\/03\/04\/tamron-sp-17-50mm-f28-a16n-ii-short-review\/\" target=\"_BLANK\">http:\/\/shashinki.com\/blog\/2008\/03\/04\/tamron-sp-17-50mm-f28-a16n-ii-short-review\/<\/a><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo3.jpg\"><br \/>\nI found it to be pretty sharp, though not scorching sharp or contrasty like Carl Zeiss lenses are, especially the Sony Carl Zeiss 16-80mm F3.5-4.5 DT which it gets compared to, a lot. Well, the CZ has better range and sharpness, at the expense of a stop or so in shutter speed.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo2.jpg\"><br \/>\nCarl Zeiss Vario-Sonnar T* 28-80mm F3.5-5.6 for Contax N mount! Funny, I didn&#8217;t know Carl Zeiss made darker standard kit lenses. Well they gotta, for Contax&#8230;<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo4.jpg\"><br \/>\n2:1 macro with the Sony 18-70mm F3.5-5.6 DT lens and my Carl Zeiss Jena Flektogon 35mm F2.4 reversed in front of it. Two rings were used &#8211; a 55-58mm step up ring and a 58-49mm reverse ring.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo5.jpg\"><br \/>\n1.1:1 macro with the Canon EF-S 18-55mm F3.5-5.6 IS USM and Canon 50mm F1.8 MkII reversed in front of it. A 58-52mm reverse ring was used.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo6.jpg\"><br \/>\nCanon 500mm F4.5L, casually slung across his back.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo7.jpg\"><br \/>\nThis is how Ein and I found out that the Tokina 11-16mm F2.8 can be used on full-frame from about 13mm onwards. This is the same method I used to <a href=\"http:\/\/www.glaringnotebook.com\/?p=1078\" target=\"_BLANK\">mount the Tamron 70-200mm F2.8 for Canon mount<\/a> on my Sony A700!<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo8.jpg\"><br \/>\nTamron 90mm F2.8 with 2x teleconverter and flash.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/eingo9.jpg\"><br \/>\nTamron 90mm F2.8 without teleconverter. Uh, obvious blue chromatic aberration on the Canon text!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tamron 17-50mm F2.8 for Canon EF-S mount and the Tamron 17-50mm F2.8 for Sony A mount. The Tamron for Canon has a positively audible *zzzt* sound when focusing, from the in-lens motor, while the Sony version doesn&#8217;t as it is driven by the screw drive on the body. The Sigma 18-50mm F2.8 for Canon didn&#8217;t [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,19],"tags":[],"class_list":["post-1105","post","type-post","status-publish","format-standard","hentry","category-geek","category-pictures"],"_links":{"self":[{"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/posts\/1105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1105"}],"version-history":[{"count":1,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/posts\/1105\/revisions"}],"predecessor-version":[{"id":11526,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/posts\/1105\/revisions\/11526"}],"wp:attachment":[{"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}