{"id":396,"date":"2018-08-01T15:49:49","date_gmt":"2018-08-01T13:49:49","guid":{"rendered":"https:\/\/www.optics-trade.eu\/blog\/?p=396"},"modified":"2023-02-20T13:26:43","modified_gmt":"2023-02-20T12:26:43","slug":"relative-brightness","status":"publish","type":"post","link":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/","title":{"rendered":"Relative Brightness | Optics Trade Debates"},"content":{"rendered":"<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/6RKobJmi55k\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars.html\" target=\"_blank\" rel=\"noopener\"><button class=\"button1\">Check out binoculars here<\/button><\/a><\/p>\n<p align=\"LEFT\">Welcome to Optics Trade debates. In each episode, we talk about a different topic and try to answer the most common questions we receive about it. Today, we are going to talk about relative brightness.<\/p>\n<p align=\"LEFT\">Relative brightness is found in tables with <a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars.html\">binocular<\/a> specifications. It changes with the change of the size of the <a href=\"https:\/\/www.optics-trade.eu\/blog\/exit-pupil\/\">exit pupil.<\/a><\/p>\n<p align=\"LEFT\">Most other devices have a variable magnification, so the size of the <a href=\"https:\/\/www.optics-trade.eu\/blog\/exit-pupil\/\">exit pupil<\/a> changes with the magnification, and the use of relative brightness isn&#8217;t practical.<\/p>\n<p align=\"LEFT\">Relative brightness is defined as the square of the <a href=\"https:\/\/www.optics-trade.eu\/blog\/exit-pupil\/\">exit pupil<\/a>. Per instance, an <a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars\/shopby\/fixed_magnification-8x\/lens_diameter-56_mm.html\">8&#215;56 binocular<\/a> has a 7mm diameter of the <a href=\"https:\/\/www.optics-trade.eu\/blog\/exit-pupil\/\">exit pupil<\/a>\u00a0and its relative brightness is 49.<\/p>\n<p align=\"LEFT\">Relative brightness was a really important factor in the past. It lost most of its accuracy after the second world war because most manufacturers started producing binoculars with different types of glass, <a href=\"https:\/\/www.optics-trade.eu\/blog\/lens-coatings\/\">coatings<\/a>, prisms&#8230; All of these factors affect the actual brightness of the <a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars.html\">binoculars<\/a>.<\/p>\n<p align=\"LEFT\">Before WW2, <a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars.html\">binoculars<\/a> could be easily compared and it was obvious which models are better for use in low light. But today it&#8217;s more or less useless because the quality of optics differs so much.<\/p>\n<p align=\"LEFT\">Fewer and fewer manufacturers specify relative brightness for their products.<\/p>\n<p align=\"LEFT\">Relative brightness ranges from 1 to 49, so the minimum relative brightness is 1 and the maximum is 49.<\/p>\n<p align=\"LEFT\">Relative brightness was really useful in the past because <a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars.html\">binoculars<\/a> came in really strange configurations and it wasn&#8217;t obvious which binoculars were brighter.<\/p>\n<p align=\"LEFT\">We would like to thank you for your time. In case we did not answer all the questions regarding this topic, please leave a comment below or send an e-mail to us. If you found this video useful, please subscribe to our <a href=\"https:\/\/www.youtube.com\/channel\/UCmsFsYWK5hvf1vUZMoWOqPg?view_as=subscriber\">channel<\/a>.<\/p>\n<p align=\"LEFT\"><strong>Explanation of the term on our website:<\/strong><\/p>\n<p style=\"padding-left: 30px; text-align: center;\"><em>Relative brightness is a calculation of how bright the image should be when viewed through binoculars. It is presented as a square value of the exit pupil. 10&#215;50 binoculars have an exit pupil value of 5.0 (dividing lens diameter with magnification). Square of 5.0 gives us a value of relative brightness which is 25.0. As the relative brightness value increases, we have a brighter image. On the opposite the lower the value, the darker the image.<\/em><\/p>\n<p style=\"padding-left: 30px; text-align: center;\"><em>In the past, relative brightness was an important value in determining the brightness of the optics. The manufacturers were using the same kind of technology and materials of the lenses, therefore, the optics were comparable. Nowadays, they use different types of lenses and modern coatings so the relative brightness has lost its meaning because the brightness of the optics depends more on the quality of the coatings than on the relative brightness.<\/em><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.podbean.com\/media\/player\/6i9yv-9506cf-pb?from=share&amp;skin=1&amp;share=1&amp;fonts=Helvetica&amp;download=0&amp;skin=1&amp;btn-skin=107\" width=\"100%\" height=\"100\" frameborder=\"0\" scrolling=\"no\" data-name=\"pb-iframe-player\"><\/iframe><br \/>\nProducts mentioned:<br \/>\nBinoculars: <a href=\"https:\/\/www.optics-trade.eu\/en\/binoculars.html\">https:\/\/www.optics-trade.eu\/en\/binoculars.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Check out binoculars here Welcome to Optics Trade debates. In each episode, we talk about a different topic and try to answer the most common questions we receive about it. Today, we are going to talk about relative brightness. Relative brightness is found in tables with binocular specifications. It changes with the change of the&hellip;&nbsp;<a href=\"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Relative Brightness | Optics Trade Debates<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","footnotes":""},"categories":[158,1264],"tags":[5607],"class_list":["post-396","post","type-post","status-publish","format-standard","hentry","category-binoculars","category-youtube-videos","tag-optics-trade-debates"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Relative Brightness | Optics Trade Debates - Optics Trade Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Relative Brightness | Optics Trade Debates - Optics Trade Blog\" \/>\n<meta property=\"og:description\" content=\"Check out binoculars here Welcome to Optics Trade debates. In each episode, we talk about a different topic and try to answer the most common questions we receive about it. Today, we are going to talk about relative brightness. Relative brightness is found in tables with binocular specifications. It changes with the change of the&hellip;&nbsp;Read More &raquo;Relative Brightness | Optics Trade Debates\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/\" \/>\n<meta property=\"og:site_name\" content=\"Optics Trade Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/OpticsTrade\/\" \/>\n<meta property=\"article:published_time\" content=\"2018-08-01T13:49:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-20T12:26:43+00:00\" \/>\n<meta name=\"author\" content=\"Polona Kraner\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Polona Kraner\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/\"},\"author\":{\"name\":\"Polona Kraner\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#\\\/schema\\\/person\\\/dfcd27f8de2a929ca5ffa513b9081d0d\"},\"headline\":\"Relative Brightness | Optics Trade Debates\",\"datePublished\":\"2018-08-01T13:49:49+00:00\",\"dateModified\":\"2023-02-20T12:26:43+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/\"},\"wordCount\":456,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#organization\"},\"keywords\":[\"Optics Trade Debates\"],\"articleSection\":[\"Binoculars\",\"Youtube Videos\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/\",\"url\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/\",\"name\":\"Relative Brightness | Optics Trade Debates - Optics Trade Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#website\"},\"datePublished\":\"2018-08-01T13:49:49+00:00\",\"dateModified\":\"2023-02-20T12:26:43+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/relative-brightness\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Binoculars\",\"item\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/category\\\/binoculars\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Relative Brightness | Optics Trade Debates\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/\",\"name\":\"Optics Trade Blog\",\"description\":\"Articles about binoculars, riflescopes, spotting scopes and other sport optics\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#organization\",\"name\":\"Optics Trade\",\"url\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/OpticsTradeBlog_logo-27.png\",\"contentUrl\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/OpticsTradeBlog_logo-27.png\",\"width\":2026,\"height\":241,\"caption\":\"Optics Trade\"},\"image\":{\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/OpticsTrade\\\/\",\"https:\\\/\\\/www.instagram.com\\\/opticstrade.hunting\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/optics-trade\",\"https:\\\/\\\/www.pinterest.com\\\/opticstrade\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/OpticsTradeEU\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/#\\\/schema\\\/person\\\/dfcd27f8de2a929ca5ffa513b9081d0d\",\"name\":\"Polona Kraner\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/10\\\/IMG_7006-96x96.jpg\",\"url\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/10\\\/IMG_7006-96x96.jpg\",\"contentUrl\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/10\\\/IMG_7006-96x96.jpg\",\"caption\":\"Polona Kraner\"},\"description\":\"is a writer keeping the readers up-to-date on the latest developments in the world of sports optics.\",\"url\":\"https:\\\/\\\/www.optics-trade.eu\\\/blog\\\/author\\\/polona\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Relative Brightness | Optics Trade Debates - Optics Trade Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/","og_locale":"en_US","og_type":"article","og_title":"Relative Brightness | Optics Trade Debates - Optics Trade Blog","og_description":"Check out binoculars here Welcome to Optics Trade debates. In each episode, we talk about a different topic and try to answer the most common questions we receive about it. Today, we are going to talk about relative brightness. Relative brightness is found in tables with binocular specifications. It changes with the change of the&hellip;&nbsp;Read More &raquo;Relative Brightness | Optics Trade Debates","og_url":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/","og_site_name":"Optics Trade Blog","article_publisher":"https:\/\/www.facebook.com\/OpticsTrade\/","article_published_time":"2018-08-01T13:49:49+00:00","article_modified_time":"2023-02-20T12:26:43+00:00","author":"Polona Kraner","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Polona Kraner","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/#article","isPartOf":{"@id":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/"},"author":{"name":"Polona Kraner","@id":"https:\/\/www.optics-trade.eu\/blog\/#\/schema\/person\/dfcd27f8de2a929ca5ffa513b9081d0d"},"headline":"Relative Brightness | Optics Trade Debates","datePublished":"2018-08-01T13:49:49+00:00","dateModified":"2023-02-20T12:26:43+00:00","mainEntityOfPage":{"@id":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/"},"wordCount":456,"commentCount":0,"publisher":{"@id":"https:\/\/www.optics-trade.eu\/blog\/#organization"},"keywords":["Optics Trade Debates"],"articleSection":["Binoculars","Youtube Videos"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/","url":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/","name":"Relative Brightness | Optics Trade Debates - Optics Trade Blog","isPartOf":{"@id":"https:\/\/www.optics-trade.eu\/blog\/#website"},"datePublished":"2018-08-01T13:49:49+00:00","dateModified":"2023-02-20T12:26:43+00:00","breadcrumb":{"@id":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.optics-trade.eu\/blog\/relative-brightness\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.optics-trade.eu\/blog\/"},{"@type":"ListItem","position":2,"name":"Binoculars","item":"https:\/\/www.optics-trade.eu\/blog\/category\/binoculars\/"},{"@type":"ListItem","position":3,"name":"Relative Brightness | Optics Trade Debates"}]},{"@type":"WebSite","@id":"https:\/\/www.optics-trade.eu\/blog\/#website","url":"https:\/\/www.optics-trade.eu\/blog\/","name":"Optics Trade Blog","description":"Articles about binoculars, riflescopes, spotting scopes and other sport optics","publisher":{"@id":"https:\/\/www.optics-trade.eu\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.optics-trade.eu\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.optics-trade.eu\/blog\/#organization","name":"Optics Trade","url":"https:\/\/www.optics-trade.eu\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.optics-trade.eu\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2024\/02\/OpticsTradeBlog_logo-27.png","contentUrl":"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2024\/02\/OpticsTradeBlog_logo-27.png","width":2026,"height":241,"caption":"Optics Trade"},"image":{"@id":"https:\/\/www.optics-trade.eu\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/OpticsTrade\/","https:\/\/www.instagram.com\/opticstrade.hunting\/","https:\/\/www.linkedin.com\/company\/optics-trade","https:\/\/www.pinterest.com\/opticstrade","https:\/\/www.youtube.com\/user\/OpticsTradeEU"]},{"@type":"Person","@id":"https:\/\/www.optics-trade.eu\/blog\/#\/schema\/person\/dfcd27f8de2a929ca5ffa513b9081d0d","name":"Polona Kraner","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2020\/10\/IMG_7006-96x96.jpg","url":"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2020\/10\/IMG_7006-96x96.jpg","contentUrl":"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2020\/10\/IMG_7006-96x96.jpg","caption":"Polona Kraner"},"description":"is a writer keeping the readers up-to-date on the latest developments in the world of sports optics.","url":"https:\/\/www.optics-trade.eu\/blog\/author\/polona\/"}]}},"lang":"en","translations":{"en":396},"pll_sync_post":{},"_links":{"self":[{"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/posts\/396","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/comments?post=396"}],"version-history":[{"count":0,"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/posts\/396\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/media?parent=396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/categories?post=396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.optics-trade.eu\/blog\/wp-json\/wp\/v2\/tags?post=396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}