{"id":1036,"date":"2008-02-17T05:26:05","date_gmt":"2008-02-17T05:26:05","guid":{"rendered":"http:\/\/glaringnotebook.com\/?p=1036"},"modified":"2008-02-17T05:26:05","modified_gmt":"2008-02-17T05:26:05","slug":"for-the-pixel-peeping-insomniac","status":"publish","type":"post","link":"https:\/\/glaringnotebook.com\/?p=1036","title":{"rendered":"For The Pixel-peeping Insomniac"},"content":{"rendered":"<p>Some may realize how tele-centric I am with my lenses, so here&#8217;s a shootout of 7 lenses that can reach 210mm either by themselves or with the aid of teleconverters. All shot with the Sony A100 at F16, ISO Low-key 80 with flash on a certain morning of 20th September 2007.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom1.jpg\"><br \/>\nLenses involved, from right to left:<\/p>\n<ol>\n<li>Peleng 8mm F3.5 circular fisheye (okay, it wasn&#8217;t included but it sneaked in because it thought it would look nice in the picture)<\/li>\n<li>Sony 18-70mm F3.5-5.6 DT (sold)<\/li>\n<li>Minolta 28-80mm F3.5-5.6 Silver (sold)<\/li>\n<li>Vivitar Series 1 28-105mm F2.8-3.8<\/li>\n<li>Cosina 70-210mm F2.8-4 Macro<\/li>\n<li>Minolta 70-210mm F4 &#8220;beercan&#8221;<\/li>\n<li>Tamron 200-400mm F5.6<\/li>\n<\/ol>\n<p>The battered, misaligned elements, melted rubber Sigma 70-210mm F4-5.6 opted to skip the photo shoot.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom2.jpg\"><br \/>\nSony 18-70mm F3.5-5.6 DT with Tamron 1.4x and Kenko 2x. 1\/60s.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom3.jpg\"><br \/>\nMinolta 28-80mm F3.5-5.6 with Tamron 1.4x and Kenko 2x. 1\/100s.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom4.jpg\"><br \/>\nVivitar Series 1 28-105mm F2.8-3.8 with Kenko 2x. 1\/125s.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom5.jpg\"><br \/>\nSigma 70-210mm F4-5.6. 1\/125s. Note that this is a battered lens found in a box of junk, with misaligned elements that give all sorts of aberrations.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom6.jpg\"><br \/>\nMinolta 70-210mm F4 &#8220;beercan&#8221;. 1\/125s.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom7.jpg\"><br \/>\nCosina 70-210mm F2.8-4 Macro. 1\/125s.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom8.jpg\"><br \/>\nTamron 200-400mm F5.6. 1\/125s. The minimum focus distance is 2.5 meters, far longer than my room, thus the objects are out of focus.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.glaringnotebook.com\/zimages\/toom9.jpg\"><br \/>\nTamron 200-400mm F5.6 <b>at F32<\/b> 1\/125s. Still not quite in focus.<\/p>\n<p>Why do the lenses vary so much in color and actual focal length?<\/p>\n<ol>\n<li>Focal length changes with focus distance. The closer the focus, the shorter the focal length, especially on zoom lenses.<\/li>\n<li>Slower shutter speeds let in more ambient light; in the Sony 18-70mm it looks more blue because more flourescent light has come in.<\/li>\n<\/ol>\n<p>Also, the Tamron 1.4x teleconverter is a wee bit soft. Gotta get a newer one&#8230; but this is a nice softener for portraits.<\/p>\n<p>I particularly like the Vivitar Series 1 28-105mm&#8217;s color. The Tamron 200-400mm seems rather blue while the F32 shot kills off the flourescent light&#8217;s blue.<\/p>\n<p>To be fair, I should shoot with the lenses focused at infinity, plus most lenses (except portrait lenses and macros) are optimized for sharpness at infinity. I conducted this test past midnight, like about every other photographic test that I do, or I could&#8217;ve headed out to the hills near by house.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some may realize how tele-centric I am with my lenses, so here&#8217;s a shootout of 7 lenses that can reach 210mm either by themselves or with the aid of teleconverters. All shot with the Sony A100 at F16, ISO Low-key 80 with flash on a certain morning of 20th September 2007. Lenses involved, from right [&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-1036","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\/1036","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=1036"}],"version-history":[{"count":0,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/posts\/1036\/revisions"}],"wp:attachment":[{"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}