{"id":1469,"date":"2010-11-07T04:06:17","date_gmt":"2010-11-07T04:06:17","guid":{"rendered":"http:\/\/glaringnotebook.com\/?p=1469"},"modified":"2010-11-07T04:06:17","modified_gmt":"2010-11-07T04:06:17","slug":"12-to-the-24","status":"publish","type":"post","link":"https:\/\/glaringnotebook.com\/?p=1469","title":{"rendered":"12 To The 24"},"content":{"rendered":"


\nPerhaps, it was indeed too soon to declare that I would only buy one A-mount lens in 2010. Here’s the second (the first being the rare Minolta 24-50mm F4<\/a>.)<\/p>\n


\nThis is the Sigma 12-24mm F4.5-5.6 EX DG, which sets the world record for widest, brightest rectilinear<\/b> lens for 35mm full-frame format. 122 degrees diagonal coverage!<\/p>\n

Of course, my Peleng 8mm F3.5 circular fisheye does 180 degrees from edge to edge, but de-fishing the image to make a rectilinear projection loses a lot of resolution!<\/p>\n


\nYou can fit pretty much all you can see, in the frame!<\/p>\n


\nPerspective distortion makes closer objects much bigger.<\/p>\n


\nA common misuse of ultra-wide angle lenses is when they are not pointing straight at the subject – you get parallel lines converging. In this case it is recommended to stand further away, aim forward, and crop the excess floor.<\/p>\n


\nHowever, it is great when you are in a tight space! I could not stand any further back.<\/p>\n


\nIt also gives plenty of leeway for group shots.<\/p>\n


\nAlso, you may find you’d be cropping feet a lot less often in tight spaces!<\/p>\n


\nI used DxO Optics Pro Elite to process these pictures from the A900 – it applies a fair bit of barrel distortion correction, causing the corners to look more stretched out. Arguably, the barrel distortion of the original picture looks a bit more natural. Also, I shot this at a slower shutter speed, so don’t be confused between motion blur and stretched edges!<\/p>\n


\nI was standing just in front of them.<\/p>\n


\nSo what about that other rectilinear lens for 35mm full-frame format? The Voigtlander 12mm F5.6 in Leica M mount? Here it is, with a Sony NEX-5 and Kipon M-mount to E-mount adapter.<\/p>\n

It is, however, only for rangefinders with a shorter flange distance, or Sony NEX\/Micro-Four-Thirds\/Samsung NX cameras with an adapter. Though it won’t be so appealing on Micro-Four-Thirds due to the 2x crop factor, and the Samsung NX’s weaker ISO performance, especially since the lens is F5.6. It also does not zoom!<\/p>\n


\nHowever, its main plus point is its tiny size!<\/p>\n


\nI also stumbled upon the Sigma 8-16mm F4.5-5.6 EX DC HSM for APS-C cameras, which is slimmer, but has the same front-heavy balance. The Sigma 8-16mm focuses to 24cm close and has a front cap adapter (not to be confused with the lens hood) which takes 72mm filters. The Sigma 12-24mm meanwhile focuses to 28cm close and has a front cap adapter which takes 82mm filters.<\/p>\n

While the 8-16mm does offer practical benefits in terms of size, there isn’t an APS-C camera that does 24 megapixels yet.<\/p>\n","protected":false},"excerpt":{"rendered":"

Perhaps, it was indeed too soon to declare that I would only buy one A-mount lens in 2010. Here’s the second (the first being the rare Minolta 24-50mm F4.) This is the Sigma 12-24mm F4.5-5.6 EX DG, which sets the world record for widest, brightest rectilinear lens for 35mm full-frame format. 122 degrees diagonal coverage! […]<\/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-1469","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\/1469","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=1469"}],"version-history":[{"count":0,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=\/wp\/v2\/posts\/1469\/revisions"}],"wp:attachment":[{"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/glaringnotebook.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}