{"id":240,"date":"2019-04-08T14:08:01","date_gmt":"2019-04-08T12:08:01","guid":{"rendered":"https:\/\/koustrup.com\/?page_id=240"},"modified":"2021-10-09T17:31:51","modified_gmt":"2021-10-09T15:31:51","slug":"petzval-feltkrumning-petzval-field-curvature","status":"publish","type":"page","link":"https:\/\/foto-video.dk\/?page_id=240","title":{"rendered":"2.1.7: Petzval feltkrumning (Petzval field curvature)"},"content":{"rendered":"<nav aria-label=\"breadcrumbs\">\n            <div class=\"breadcrumb-container theme1\">\n                <ol>\n                    <li><a title=\"Du er her\" href=\"#\"><span>Du er her<\/span><\/a><span class=\"separator\">&gt;&gt;<\/span><\/li>\n                    <\/ol>\n            <\/div>\n        <\/nav>    <script type=\"application\/ld+json\">\n        {\n            \"@context\": \"http:\/\/schema.org\",\n            \"@type\": \"BreadcrumbList\",\n            \"itemListElement\": [\n                 {\n                            \"@type\": \"ListItem\",\n                            \"position\": 1,\n                            \"item\": {\n                                \"@id\": \"#\",\n                                \"name\": \"Du er her\"\n                            }\n                        }\n                                                    ]\n        }\n    <\/script>\n   \n    <script>\n            <\/script>\n\n<hr \/>\n<p><!-- Hoved Tabel --><\/p>\n<table style=\"width: 99%; float: center; border: 0px; padding: 5px; margin-right: auto; margin-left: auto;\">\n<tbody>\n<tr>\n<td style=\"text-align: left; vertical-align: top; width: 40%; border: 0px; padding: 2px;\"><img decoding=\"async\" class=\"alignleft size-medium wp-image-2754\" src=\"https:\/\/foto-video.dk\/wp-content\/uploads\/2021\/10\/Petzval-1-300x183.jpg\" alt=\"\" width=\"300\" height=\"183\" srcset=\"https:\/\/foto-video.dk\/wp-content\/uploads\/2021\/10\/Petzval-1-300x183.jpg 300w, https:\/\/foto-video.dk\/wp-content\/uploads\/2021\/10\/Petzval-1.jpg 562w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/td>\n<td style=\"text-align: left; vertical-align: top; width: 60%; border: 0px; padding: 2px;\"><strong>Petzval feltkrumning<\/strong> er en beskrivelse af den optiske forvr\u00e6ngning der sker n\u00e5r et fladt objekt eller et ikke fladt objekt forbi den hyperfokale distance ikke kan bringes i fokus p\u00e5 et fladt plan (sensoren).<br \/>\nMan kan minimere dette ved at bruge en h\u00f8jere bl\u00e6ndev\u00e6rdi, p\u00e5 bekostning af lysm\u00e6ngden. Ved bl\u00e6ndev\u00e6rdier over f8 kan man risikere at billedet bliver sl\u00f8ret \/ uskarpt pga. lys diffraktion.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<p style=\"text-align: right;\"><a href=\"https:\/\/foto-video.dk\/?page_id=140\"><strong>Tilbage til objektivet&gt;<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Petzval feltkrumning er en beskrivelse af den optiske forvr\u00e6ngning der sker n\u00e5r et fladt objekt eller et ikke fladt objekt forbi den hyperfokale distance ikke kan bringes i fokus p\u00e5 et fladt plan (sensoren). Man kan minimere dette ved at bruge en h\u00f8jere bl\u00e6ndev\u00e6rdi, p\u00e5 bekostning af lysm\u00e6ngden. Ved bl\u00e6ndev\u00e6rdier over f8 kan man risikere [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":140,"menu_order":40,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-240","page","type-page","status-publish","hentry","post"],"_links":{"self":[{"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/pages\/240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/foto-video.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=240"}],"version-history":[{"count":5,"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/pages\/240\/revisions"}],"predecessor-version":[{"id":2756,"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/pages\/240\/revisions\/2756"}],"up":[{"embeddable":true,"href":"https:\/\/foto-video.dk\/index.php?rest_route=\/wp\/v2\/pages\/140"}],"wp:attachment":[{"href":"https:\/\/foto-video.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}