{"id":1719,"date":"2009-07-27T23:11:33","date_gmt":"2009-07-27T13:11:33","guid":{"rendered":"http:\/\/www.ayton.id.au\/wp02\/?p=1719"},"modified":"2009-07-27T23:57:04","modified_gmt":"2009-07-27T13:57:04","slug":"panasonic-gh-1-at-1400mm-f8-for-close-ups-of-the-moon-hd-video-at-2800mm-in-35mm-terms","status":"publish","type":"post","link":"https:\/\/www.ayton.id.au\/wp02\/?p=1719","title":{"rendered":"Panasonic GH-1 at 1400mm f\/8 for close ups of the moon + HD video at 2800mm in 35mm terms!"},"content":{"rendered":"<p>After discovering that I couldn&#8217;t put OM mounts onto my <a href=\"http:\/\/www.ayton.id.au\/wp02\/?page_id=1513\">Four Thirds<\/a> to <a href=\"http:\/\/www.ayton.id.au\/wp02\/?page_id=1510\">Micro Four Thirds<\/a> adapter with the GH-1 (see my last post), I had to skip using my beautiful Olympus ZD EC-20 2x teleconverter for this little test.<\/p>\n<p><strong>I thus resorted to a weird combination of adapters and lenses in order:<\/strong><\/p>\n<ul>\n<li>Panasonic GH-1<\/li>\n<li>Canon EOS to MFT adapter<\/li>\n<li>Canon EF 1.4x tele-extender (NB. this would NOT work on a Canon body unless you covered up the contacts!)<\/li>\n<li>Olympus OM to Canon EOS adapter<\/li>\n<li>T2 to Olympus OM adapter<\/li>\n<li>500mm f\/5.6 Maksutov-Cassegrain mirror lens &#8211; a relatively cheap one at that!<\/li>\n<\/ul>\n<p>This combination gives me 1400mm focal length reach in 35mm terms at f\/8, but in 2x digital zoom for HD video, I get 2800mm focal length reach at f\/8! Just awesome!<\/p>\n<p><a href=\"http:\/\/www.ayton.id.au\/gary\/photos\/ByLens\/PanasonicGH1\/Maksutov\/GH1_Mak_EF14.jpg\"><img decoding=\"async\" src=\"http:\/\/www.ayton.id.au\/gary\/photos\/ByLens\/PanasonicGH1\/Maksutov\/GH1_Mak_EF14.jpg\" alt=\"GH-1 and maksutov\" width=600\/><\/a><\/p>\n<p>But how could such a compact, almost hand holdable combination like this allow good image quality?<\/p>\n<p>Well, I decided to check it out, with the moon getting some breaks between the clouds I managed to capture a few quick shots on the tripod (albeit a little over-exposed &#8211; but surprisingly, no CA!):<\/p>\n<p><a href=\"http:\/\/www.ayton.id.au\/gary\/photos\/ByLens\/PanasonicGH1\/Maksutov\/Moon_P1010456.jpg\"><img decoding=\"async\" src=\"http:\/\/www.ayton.id.au\/gary\/photos\/ByLens\/PanasonicGH1\/Maksutov\/Moon_P1010456.jpg\" alt=\"GH-1 moon full image but resized for web\" width=600\/><\/a><\/p>\n<p>and a 100% crop of this image:<\/p>\n<p><a href=\"http:\/\/www.ayton.id.au\/gary\/photos\/ByLens\/PanasonicGH1\/Maksutov\/Moon_P1010456_100pcCrop.jpg\"><img decoding=\"async\" src=\"http:\/\/www.ayton.id.au\/gary\/photos\/ByLens\/PanasonicGH1\/Maksutov\/Moon_P1010456_100pcCrop.jpg\" alt=\"100% crop\" width=600\/><\/a><\/p>\n<p><strong>and, now a very short video taken with 2x digital zoom on<\/strong> and at 1920x1080i in AVHCD mode converted and uploaded to YouTube using the supplied PhotoFunStudio software.<\/p>\n<p>The motion of the moon is because I had the kit on a stationary tripod and as the earth rotates, it makes the moon appear to move &#8211; yep&#8230; that&#8217;s how fast it moves &#8211; this is why you get star trails on longer exposures.<\/p>\n<p>Sharpness of such highly magnified images of the moon is not only dependent on the camera, lenses, focus accuracy and camera shake but also on the &#8220;atmospheric seeing&#8221; &#8211; how still the earth&#8217;s atmosphere is between you and the moon at that instant, and how much of it we have to get through &#8211; in this case quite a bit given the moon was perhaps 40deg above the horizon and not our preferred 90 deg (directly above our head) which has the least amount of atmosphere to get through.<\/p>\n<p><strong>This video is of MUCH lower quality on YouTube. It looks almost perfect on the original files though and these fill your whole computer or TV screen &#8211; not just a tiny YouTube frame as seen here! Imagine a video of the original image above but cropped in half with the 2x digital zoom.<\/strong><\/p>\n<p><a href='http:\/\/www.youtube.com\/watch?v=FHlBeDTy2Uk' >Moon at 2800mm focal length on GH-1<\/a><\/p>\n<p><object width=\"425\" height=\"344\"><param name=\"movie\" value=\"http:\/\/www.youtube.com\/v\/FHlBeDTy2Uk&#038;hl=en&#038;fs=1&#038;\"><\/param><param name=\"allowFullScreen\" value=\"true\"><\/param><param name=\"allowscriptaccess\" value=\"always\"><\/param><embed src=\"http:\/\/www.youtube.com\/v\/FHlBeDTy2Uk&#038;hl=en&#038;fs=1&#038;\" type=\"application\/x-shockwave-flash\" allowscriptaccess=\"always\" allowfullscreen=\"true\" width=\"600\" height=\"486\"><\/embed><\/object><\/p>\n<p><strong>You may wish to compare this images with previous images I have taken of the moon or check out other astro images:<\/strong><\/p>\n<ul>\n<li><a href=\"http:\/\/www.ayton.id.au\/gary\/photo\/Dig_OlyE330_lenstest2.htm\">various lens tests using the moon as a target<\/a><\/li>\n<li><a href=\"http:\/\/www.ayton.id.au\/gary\/Science\/Astronomy\/Ast_moon.htm\">information about photography of the moon<\/a><\/li>\n<li><a href=\"http:\/\/www.ayton.id.au\/gary\/JAlbumAll\/astronomy\/index.htm\">my astronomy photos<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>After discovering that I couldn&#8217;t put OM mounts onto my Four Thirds to Micro Four Thirds adapter with the GH-1 (see my last post), I had to skip using my beautiful Olympus ZD EC-20 2x teleconverter for this little test. I thus resorted to a weird combination of adapters and lenses in order: Panasonic GH-1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,3],"tags":[18,34,123],"class_list":["post-1719","post","type-post","status-publish","format-standard","hentry","category-cameras","category-photography","tag-four-thirds-micro","tag-moon","tag-panasonic-gh1"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/posts\/1719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/comments?post=1719"}],"version-history":[{"count":0,"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/posts\/1719\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/media?parent=1719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/categories?post=1719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ayton.id.au\/wp02\/wp-json\/wp\/v2\/tags?post=1719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}