{"id":48,"date":"2016-04-21T17:29:32","date_gmt":"2016-04-21T17:29:32","guid":{"rendered":"https:\/\/tma65.com\/blog\/?p=48"},"modified":"2026-05-21T11:38:45","modified_gmt":"2026-05-21T11:38:45","slug":"defining-the-optical-triangle-of-a-binocular","status":"publish","type":"post","link":"https:\/\/blog.tract-optics.co.za\/defining-the-optical-triangle-of-a-binocular\/","title":{"rendered":"Defining the Optical Triangle of a Binocular"},"content":{"rendered":"<p><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\"><div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p><span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.tract-optics.co.za\/defining-the-optical-triangle-of-a-binocular\/#Defining_the_Optical_Triangle_of_a_Binocular\" >Defining the Optical Triangle of a Binocular<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.tract-optics.co.za\/defining-the-optical-triangle-of-a-binocular\/#Another_important_factor_for_Binocular\" >Another important factor for Binocular<\/a><\/li><\/ul><\/nav><\/div><h2 style=\"text-align: justify\"><span class=\"ez-toc-section\" id=\"Defining_the_Optical_Triangle_of_a_Binocular\"><\/span>Defining the Optical Triangle of a Binocular<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\" style=\"text-align: justify\">Defining the Optical Triangle of a <a href=\"https:\/\/blog.tractoptics.com\/binoculars-for-turkey-hunting\/\" title=\"Binoculars for Turkey Hunting\" data-wpil-monitor-id=\"688\" target=\"_blank\" rel=\"noopener\">Binocular<\/a> To get an idea on how optical design works, visualize a triangle with magnification at the top, field of view in the lower left corner and eye relief in the lower right corner. If you increase or decrease one of the points of the triangle it affects the other two points. For example, when you increase magnification, you have a narrower field of view and shorter eye relief. That being said, if you are looking for a super wide field of view, the lower the magnification the better.<\/p><h2><span class=\"ez-toc-section\" id=\"Another_important_factor_for_Binocular\"><\/span>Another important factor for Binocular<span class=\"ez-toc-section-end\"><\/span><\/h2><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p class=\"wp-block-paragraph\" style=\"text-align: justify\">Now we can\u2019t leave out eye relief, another important factor, especially since more than 50% of people wear glasses. In the case of eye relief, the higher the magnification, the shorter the eye relief. Take into account that every optic is designed differently and specifications can vary from one manufacturer to another. There are also situations where the rules of the <a class=\"wpil_keyword_link\" href=\"https:\/\/tractoptics.com\/\" target=\"_blank\" rel=\"noopener nofollow\" title=\"optics\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"411\">optics<\/a> triangle are stretched, but only to a very small extent. In some cases the difference between the 8x and 10x in a given model may not be that significant. This is where you need to really study the specifications to determine the best option for you.<\/p><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p class=\"wp-block-paragraph\" style=\"text-align: justify\">The thing to be cautious about when it comes to the optical triangle is there is such a thing as too much. Let\u2019s say you find a <a href=\"https:\/\/blog.tractoptics.com\/shed-hunting-with-a-binocular\/\" title=\"Shed Hunting With a Binocular\" data-wpil-monitor-id=\"794\" target=\"_blank\" rel=\"noopener\">binocular<\/a> with an incredibly wide field of view, much greater than comparable products. Take a close look at the other specifications because chances are, that design is sacrificing one of the other key features. I have seen binos with a monstrous FOV, but the eye relief was so short that I practically had to press the eyecups into my eye sockets just to be able to see through it. In that case, the uncomfortable position of the <a href=\"https:\/\/blog.tractoptics.com\/why-turkey-hunting-with-binoculars-works-for-me\/\" title=\"Why Turkey Hunting with Binoculars Works for Me\" data-wpil-monitor-id=\"785\" target=\"_blank\" rel=\"noopener\">binocular<\/a> due to the short eye relief would not allow me to use the bino for any period of time, so the wide FOV was a moot point.<\/p><p style=\"text-align: justify\">To sum it up, finding the right balance is the key when <a title=\"Choosing Binoculars For Kids\" href=\"https:\/\/tractoptics.com\/blog\/choosing-binoculars-for-kids\/\" target=\"_blank\" rel=\"noopener\">choosing a binocular<\/a> that you can use in a variety of conditions for extensive periods of time. And that\u2019s where <a href=\"https:\/\/blog.tract-optics.co.za\/ffp-vs-sfp-reticles-which-is-right-for-you\/\">TRACT<\/a> shines. We purposely created our optical designs to give you that perfect balance of features and specifications to meet your needs.<\/p><figure id=\"attachment_3259\" aria-describedby=\"caption-attachment-3259\" style=\"width: 720px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/tractoptics.com\/new-products\/\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-3259\" title=\"The TRACT Optics Experience: Packaging\" src=\"https:\/\/blog.tractoptics.com\/wp-content\/uploads\/2016\/10\/Banner-Ideas-4.png\" alt=\"The TRACT Optics Experience: Packaging\" width=\"720\" height=\"177\" srcset=\"https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4.png 1858w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4-300x74.png 300w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4-1024x252.png 1024w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4-768x189.png 768w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4-1536x378.png 1536w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4-600x148.png 600w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2016\/10\/Banner-Ideas-4-150x37.png 150w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/a><figcaption id=\"caption-attachment-3259\" class=\"wp-caption-text\">The <a href=\"https:\/\/blog.tract-optics.co.za\/ffp-vs-sfp-reticles-which-is-right-for-you\/\">TRACT Optics<\/a> Experience: Packaging<\/figcaption><\/figure><p><\/p>","protected":false},"excerpt":{"rendered":"<p>Defining the Optical Triangle of a Binocular | TRACT design and engineer performance-grade optics without the added retail costs.<\/p>\n","protected":false},"author":2,"featured_media":12308,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2252,2254],"tags":[2462,2475,2483,2493,2495,2496,2497,2498,2499,2500,2501,2511,2512],"class_list":["post-48","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-binoculars","category-binoculars-for-hunting","tag-binocular","tag-binocular-outlet","tag-binocular-rifle-scope","tag-binoculars","tag-binoculars-10x-vs-12x","tag-binoculars-12x","tag-binoculars-8-or-10-magnification","tag-binoculars-8-vs-10","tag-binoculars-8x-or-10x","tag-binoculars-8x-vs-10x","tag-binoculars-8x42-vs-10x42","tag-binoculars-for-hunting","tag-binoculars-for-hunting-out-west"],"_links":{"self":[{"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts\/48","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/comments?post=48"}],"version-history":[{"count":2,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts\/48\/revisions"}],"predecessor-version":[{"id":12843,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts\/48\/revisions\/12843"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/media\/12308"}],"wp:attachment":[{"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/media?parent=48"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/categories?post=48"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/tags?post=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}