{"id":307,"date":"2023-06-23T06:29:44","date_gmt":"2023-06-23T06:29:44","guid":{"rendered":"https:\/\/tma65.com\/blog\/?p=307"},"modified":"2026-05-21T11:35:59","modified_gmt":"2026-05-21T11:35:59","slug":"benefits-of-a-side-focus-adjustment-on-a-riflescope","status":"publish","type":"post","link":"https:\/\/blog.tract-optics.co.za\/benefits-of-a-side-focus-adjustment-on-a-riflescope\/","title":{"rendered":"Benefits of A Side Focus Adjustment on a Riflescope"},"content":{"rendered":"<p><\/p><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p class=\"wp-block-paragraph\"><strong>The benefits of a side focus adjustment on a rifle <a class=\"wpil_keyword_link\" href=\"https:\/\/tractoptics.com\/riflescopes\" target=\"_blank\" rel=\"noopener nofollow\" title=\"scope\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"240\">scope<\/a> come into play when using either a high magnification scope or <a href=\"https:\/\/blog.tract-optics.co.za\/why-you-might-consider-a-ballistic-calculator\/\">shooting<\/a>\u00a0drastically different yardages with the same scope.<\/strong><\/p><p style=\"text-align: justify\">Parallax, derived from the Greek word <em>parallaxis<\/em> (which means \u201calternation\u201d), is the difference in the apparent position of an object viewed along two different lines of sight. It is a term often heard in the world of <a class=\"wpil_keyword_link\" href=\"https:\/\/tractoptics.com\/\" target=\"_blank\" rel=\"noopener nofollow\" title=\"rifle scopes\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"119\">rifle scopes<\/a>, but what does it mean?<\/p><p style=\"text-align: justify\">Simply put, parallax is the apparent movement of the reticle (crosshairs) on the target when the shooter&#8217;s eye moves off-center from the scope&#8217;s optical axis. This misalignment can cause errors in shot placement, especially at longer ranges. Parallax can be eliminated or greatly reduced through the use of <a href=\"https:\/\/blog.tract-optics.co.za\/videosview\/the-toric-34mm-4-25x50-ffp-mrad-elr-rifle-scope\/\">parallax adjustment<\/a> knobs or side focus dials that adjust the internal lenses to ensure that the reticle remains in the same position relative to the target, no matter where the shooter&#8217;s eye is positioned. Understanding <a class=\"wpil_keyword_link\" href=\"https:\/\/tractoptics.com\/videos\/\" target=\"_blank\" rel=\"noopener nofollow\" title=\"how to\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"388\">how to<\/a> properly adjust for parallax is crucial for achieving accurate and consistent shots, particularly in precision shooting situations.<\/p><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/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\/benefits-of-a-side-focus-adjustment-on-a-riflescope\/#An_Analogy_on_Parallax\" >An Analogy on Parallax<\/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\/benefits-of-a-side-focus-adjustment-on-a-riflescope\/#Identifying_Parallax\" >Identifying Parallax<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.tract-optics.co.za\/benefits-of-a-side-focus-adjustment-on-a-riflescope\/#Benefits_of_a_Side_Focus_Adjustment\" >Benefits of a Side Focus Adjustment<\/a><\/li><\/ul><\/nav><\/div><h2 class=\"wp-block-heading\" style=\"text-align: justify\"><span class=\"ez-toc-section\" id=\"An_Analogy_on_Parallax\"><\/span>An Analogy on Parallax<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\">Remember the dial-like speedometers in cars. Think about it being observed by the driver and the passenger of a vehicle at the same time. The driver, looking directly at the needle in relation to the numbers on the back plate, will get a more accurate reading than someone in the passenger\u2019s seat viewing the needle at an angle. Think of the needle as the reticle and the back plate as the target. Adjusting the side focus to correspond with the distance to the target eliminates parallax at that distance.<\/p><p>&nbsp;<\/p><figure id=\"attachment_4269\" aria-describedby=\"caption-attachment-4269\" style=\"width: 1024px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-4269 size-large\" src=\"https:\/\/blog.tractoptics.com\/wp-content\/uploads\/2023\/06\/Side-Focus-Adjustment-1024x683.jpg\" alt=\"A side focus adjustment on a rifle scope has numerous benefits for shooters, particularly those who engage in long-range shooting or hunting.\" width=\"1024\" height=\"683\" title=\"\" srcset=\"https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-1024x683.jpg 1024w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-300x200.jpg 300w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-768x512.jpg 768w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-1536x1024.jpg 1536w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-960x640.jpg 960w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-450x300.jpg 450w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment-150x100.jpg 150w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2023\/06\/Side-Focus-Adjustment.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4269\" class=\"wp-caption-text\">A side focus adjustment on a <a href=\"https:\/\/blog.tract-optics.co.za\/the-best-air-rifle-scopes\/\">rifle scope<\/a> has numerous benefits for shooters, particularly those who engage in <a href=\"https:\/\/blog.tractoptics.com\/videosview\/illuminated-reticle-battery-installation-2\/\" title=\"Illuminated Reticle battery installation on your TRACT TORIC 34MM 4-25X50\" data-wpil-monitor-id=\"490\" target=\"_blank\" rel=\"noopener\">long-range shooting<\/a> or hunting.<\/figcaption><\/figure><p style=\"text-align: justify\">One thing to note is that if you are looking through the optical center of the <a title=\"30mm Versus 1-inch Scope Tubes\" href=\"https:\/\/tractoptics.com\/riflescopes\/toric-34mm-elr-rifle-scopes\" target=\"_blank\" rel=\"noopener\">scope<\/a>, parallax does not show up. It is only visible when your eye is off center. You may not be looking through the optical center of the scope if you\u2019re <a title=\"Shooting a 22LR Rifle in a Whole New Way\" href=\"https:\/\/tractoptics.com\/blog\/shooting-22lr-rifle-in-a-whole-new-way\/\" target=\"_blank\" rel=\"noopener\">shooting<\/a> at sharp up or downhill angles. It will also affect you if your head is not positioned on the firearm\u2019s stock properly.<\/p><h2><span class=\"ez-toc-section\" id=\"Identifying_Parallax\"><\/span>Identifying Parallax<span class=\"ez-toc-section-end\"><\/span><\/h2><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\">The greater the distance to the target and the higher magnification of the optic means more parallax error.<\/p><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p class=\"wp-block-paragraph\" style=\"text-align: justify\">While keeping the <a href=\"https:\/\/blog.tractoptics.com\/videosview\/versatility-of-the-tract-bino-chest-pak\/\" title=\"Versatility of the TRACT Bino Chest Pak\" data-wpil-monitor-id=\"1622\" target=\"_blank\" rel=\"noopener\">rifle still and looking through the riflescope<\/a>, a slight nod of the head up and down will quickly determine if parallax is present. To remove it, start with the side focus mechanism on the number matching the distance you are shooting, then rotate in both directions, stopping when you see the target in focus. Note the reticle should already be in focus if you adjusted (link) the quick focus eyepiece properly. A common mistake is thinking the side knob will focus the reticle.<\/p><p>&nbsp;<\/p><p><iframe src=\"https:\/\/www.youtube.com\/embed\/33b8TqIkYGY\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p><p>Josh at <a href=\"https:\/\/www.youtube.com\/@PursuitofAccuracy\" target=\"_blank\" rel=\"noopener\">Pursuit of Accuracy<\/a> shows you <a href=\"https:\/\/blog.tract-optics.co.za\/how-to-maximize-deer-hunting-season\/\">how to<\/a> shoot better groups by utilizing your side focus adjustment.<\/p><p>&nbsp;<\/p><h2 style=\"text-align: justify\"><span class=\"ez-toc-section\" id=\"Benefits_of_a_Side_Focus_Adjustment\"><\/span>Benefits of a Side Focus Adjustment<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\">A side focus adjustment on a <a href=\"https:\/\/blog.tractoptics.com\/the-convenience-of-scope-throw-levers\/\" title=\"The Convenience of Scope Throw Levers 11\" data-wpil-monitor-id=\"517\" target=\"_blank\" rel=\"noopener\">rifle scope<\/a> has numerous benefits for shooters, particularly those who engage in long-range shooting or hunting. This feature allows the shooter to adjust for parallax without having to change the position of their head or body, which can be especially useful in difficult shooting positions or when shooting from a prone position. Additionally, side focus dials provide precise adjustments that allow the shooter to fine-tune the focus of the reticle at different ranges, ensuring that shots are consistently accurate. Another advantage of side focus adjustment is that it allows for easier and quicker adjustments when switching between targets at different distances. Overall, a side focus adjustment on a <a href=\"https:\/\/blog.tractoptics.com\/finding-the-perfect-6-5-creedmoor-rifle-scope\/\" title=\"Finding the Perfect 6.5 Creedmoor Rifle Scope\" data-wpil-monitor-id=\"491\" target=\"_blank\" rel=\"noopener\">rifle scope<\/a> is a valuable feature that can greatly enhance accuracy and improve a shooter&#8217;s overall performance.<\/p><p>&nbsp;<\/p><figure id=\"attachment_4262\" aria-describedby=\"caption-attachment-4262\" style=\"width: 1024px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"wp-image-4262 size-large\" src=\"https:\/\/blog.tractoptics.com\/wp-content\/uploads\/2017\/09\/Benefits-Side-Adjustment-1024x683.jpg\" alt=\"The benefits of a side focus adjustment on a rifle scope come into play when using either a high magnification scope or shooting\u00a0drastically different yardages with the same scope.\" width=\"1024\" height=\"683\" title=\"\" srcset=\"https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-1024x683.jpg 1024w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-300x200.jpg 300w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-768x512.jpg 768w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-1536x1024.jpg 1536w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-960x640.jpg 960w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-450x300.jpg 450w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment-150x100.jpg 150w, https:\/\/blog.tract-optics.co.za\/wp-content\/uploads\/sites\/4\/2017\/09\/Benefits-Side-Adjustment.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4262\" class=\"wp-caption-text\">The benefits of a side focus adjustment on a rifle scope come into play when using either a high magnification scope or shooting\u00a0drastically different yardages with the same scope.<\/figcaption><\/figure><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p style=\"text-align: justify\"><\/p><p class=\"wp-block-paragraph\" style=\"text-align: justify\">Generally speaking, parallax should not be a major concern for the average big game hunter. If your scope happens to have an adjustment for parallax and you don\u2019t have a need for it, you can set it at 100 and never touch it again. Keep in mind that the yardage markings on the parallax adjustment are not exact and are just meant to get you in the ball park. Fine tuning will need to be done to further eliminate parallax. Parallax correction is a must for anyone attempting to use either a high magnification <a href=\"https:\/\/blog.tractoptics.com\/best-spotting-scope-for-long-range-shooting\/\" title=\"Finding the Best Spotting Scope For Long Range Shooting\" data-wpil-monitor-id=\"1560\" target=\"_blank\" rel=\"noopener\">scope or shoot<\/a> drastically different yardages with the same scope.<\/p><p>To learn more about the benefits of a side focus adjustment, <a href=\"https:\/\/www.youtube.com\/watch?v=os4nF4PqMQg\" target=\"_blank\" rel=\"noopener\">check out this video<\/a> from co-founder Jon LaCorte.<\/p><p><\/p>","protected":false},"excerpt":{"rendered":"<p>Benefits of A Side Focus Adjustment on a Riflescope<\/p>\n","protected":false},"author":2,"featured_media":12063,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2258,2259,2265],"tags":[3113,3114,3116,3124,3128,3129,3138,3148,3154,3168,3210],"class_list":["post-307","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hunting","category-hunting-rifle-scope","category-rifle-scope","tag-scope-cam","tag-scope-caps","tag-scope-cover","tag-scope-eye-relief","tag-scope-lens-covers","tag-scope-level","tag-scope-mounts","tag-scope-rangefinder","tag-scope-rings","tag-scope-window-mount","tag-side-focus-adjustment"],"_links":{"self":[{"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts\/307","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=307"}],"version-history":[{"count":1,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts\/307\/revisions"}],"predecessor-version":[{"id":11344,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/posts\/307\/revisions\/11344"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/media\/12063"}],"wp:attachment":[{"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/media?parent=307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/categories?post=307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.tract-optics.co.za\/wp-json\/wp\/v2\/tags?post=307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}