{"id":6487,"date":"2014-08-28T11:52:34","date_gmt":"2014-08-28T01:52:34","guid":{"rendered":"http:\/\/www.ayton.id.au\/wp02\/?p=6487"},"modified":"2014-10-16T07:06:37","modified_gmt":"2014-10-15T21:06:37","slug":"at-long-last-the-metabones-canon-ef-to-micro-four-thirds-speed-booster-adapter-is-here","status":"publish","type":"post","link":"http:\/\/www.ayton.id.au\/wp02\/?p=6487","title":{"rendered":"At long last, the Metabones Canon EF to Micro Four Thirds Speed Booster adapter is here"},"content":{"rendered":"<p>Be warned, this <a href=\"http:\/\/www.metabones.com\/products\/details\/MB_SPEF-m43-BM1\" target=\"_blank\">Metabones Speed Booster adapter<\/a> is a very expensive, special niche item which will only suit some people with Micro Four Thirds cameras (there is a special &#8220;S&#8221; version or BM2 version for Olympus OM-D cameras &#8211; see below).<\/p>\n<p>For someone like me who also has some great Canon pro lenses such as the 17mm tilt shift and the 135mm f\/2.0, it becomes a very interesting proposition despite its price of $US599.<\/p>\n<p>It will be of particular use to videographers who do not care much for autofocus anyway &#8211; see <a href=\"http:\/\/www.eoshd.com\/content\/13307\/officially-announced-metabones-canon-ef-speed-booster-micro-four-thirds-panasonic-gh4\" target=\"_blank\">EOSHD first impressions<\/a><\/p>\n<p><img decoding=\"async\" alt=\"adapter\" src=\"http:\/\/www.metabones.com\/assets\/p\/mb_spef-m43-bm1_01s.jpg\" width=\"600\/\" \/><\/p>\n<h2>What can this adapter do?<\/h2>\n<ul>\n<li>it <strong>allows use of any Canon EF lens on your Micro Four Thirds camera with full aperture control, optical image stabilisation<\/strong> (if on the lens) and provides data for EXIF data store on the image<\/li>\n<li>allows electronic manual focus &#8211; ie. turn focus ring and if camera and lens are set to do so, it will automatically activate magnified view mode<\/li>\n<li>optional external 5V power supply<\/li>\n<li>potential to also use other legacy lenses via adapters to Canon EF &#8211; but no aperture control, EXIF, OIS, and some lenses are NOT compatible due to rear projections potentially hitting the glass elements (eg. OM 50mm f\/1.8 lens)<\/li>\n<li>it does this with <strong>high optical quality 0.71x focal length reducing elements<\/strong> which:\n<ul>\n<li><strong>reduces the 2x crop factor of Micro Four Thirds sensors to 1.4x crop factor<\/strong> &#8211; half way between APS-C (1.6x crop factor) and APS-H (the Canon 1D III\/IV dSLRs which are 1.3x crops)<\/li>\n<li><strong>effectively allows 1 stop MORE light in<\/strong>, so your f\/2.8 lens effectively becomes f\/2<\/li>\n<li><strong>IMPROVES image quality<\/strong>, particularly for these full frame lenses which were mainly designed for film cameras &#8211; improved telecentricity, improved contrast, improved resolution<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>What can&#8217;t this adapter do?<\/h2>\n<ul>\n<li>does not fit on Olympus OM-D cameras as hits the protruding EVF<\/li>\n<li>does not support Canon EF-S lenses<\/li>\n<li>does not support autofocus<\/li>\n<li>does not support dSLR focus confirmation &#8211; this is not supported on mirrorless cameras (eg. Dandelion chips on adapters for legacy manual focus lenses)<\/li>\n<li>not compatible with some legacy lenses due to projecting rear mechanisms which may damage the glass elements<\/li>\n<li>does not support in-camera lens corrections such as peripheral shading, CA and distortion<\/li>\n<\/ul>\n<h2>Examples:<\/h2>\n<ul>\n<li>Canon EF 135mm f\/2 L becomes 96mm f\/1.4 = 200mm f\/2.8 in 35mm fov and dof terms<\/li>\n<li>Canon TS-E 17mm f\/4 tilt-shift becomes 12mm f\/2.8 = 24mm f\/5.6 tilt shift in 35mm fov and dof terms<\/li>\n<li>Rokinon 85mm f\/1.4 becomes 60mm f\/1.0 = 120mm f\/2 in 35mm fov and dof terms<\/li>\n<li>Canon TS-E 90mm f\/2.8 becomes 64mm f\/2 = 128mm f\/4 tilt shift in 35mm fov and dof terms<\/li>\n<li>Olympus OM 100mm f\/2.8 becomes 71mm f\/2 = 140mm f\/4 \u21d2 no advantage over the mZD 75mm f\/1.8 and I am not sure if it can be used without modifications<\/li>\n<\/ul>\n<h2>A final question though:<\/h2>\n<ul>\n<li>for Olympus camera users &#8211; does the adapter send the 0.71x adjusted focal length to the camera or the actual focal length &#8211; this may be very important as the in-camera image stabilisation system (IBIS) relies on the effective focal length data, and given the adapter is electronic, users will not be able to manual over-ride the focal length as they can do with legacy non-electronic adapters<\/li>\n<li>thus will the Olympus IBIS be accurate when used with this adapter &#8211; or does Metabones need to do a firmware update to ensure this accuracy?<\/li>\n<li>I have emailed Metabones and will post the answer as soon as I get it.<\/li>\n<\/ul>\n<h2>Metabones have introduced a &#8220;S&#8221; version for compatibility with the protruding EVF of the Olympus OM-D cameras<\/h2>\n<p>The original version does NOT mount on the Olympus OM-D E-M1 or E-M5 due to the overhanging EVF getting in the way and only barely mounts on the E-M10. Their web page now states these models are NOT supported for this adapter!<\/p>\n<p>In Oct 2014, a &#8220;S&#8221; version MB_SPEF-m43-BM2 was announced with compatibility for the OM-D&#8217;s but loses the jog dial which allows aperture control when using an external power source &#8211; can still control a Canon lens aperture using the OM-D or GH cameras power.<\/p>\n<p>see <a href=\"http:\/\/www.metabones.com\/products\/details\/MB_SPEF-m43-BM2\" target=\"_blank\">Metabones S adapter<\/a>.<\/p>\n<p>Still have not heard from Metabones regarding the IBIS potential issue above either.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Be warned, this Metabones Speed Booster adapter is a very expensive, special niche item which will only suit some people with Micro Four Thirds cameras (there is a special &#8220;S&#8221; version or BM2 version for Olympus OM-D cameras &#8211; see below). For someone like me who also has some great Canon pro lenses such as [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,3],"tags":[265,44,18,323,241,14,15],"class_list":["post-6487","post","type-post","status-publish","format-standard","hentry","category-lenses","category-photography","tag-adapters","tag-canon","tag-four-thirds-micro","tag-metabones","tag-micro-four-thirds","tag-olympus","tag-panasonic"],"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/posts\/6487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/comments?post=6487"}],"version-history":[{"count":0,"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/posts\/6487\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/media?parent=6487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/categories?post=6487"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/tags?post=6487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}