{"id":29811,"date":"2026-03-02T11:18:44","date_gmt":"2026-03-02T11:18:44","guid":{"rendered":"https:\/\/www.oculus.de\/en\/?post_type=avada_faq&#038;p=29811"},"modified":"2026-03-02T11:18:44","modified_gmt":"2026-03-02T11:18:44","slug":"why-a-lens-diameter-of-21-mm","status":"publish","type":"avada_faq","link":"https:\/\/www.oculus.de\/en\/faq-items\/why-a-lens-diameter-of-21-mm\/","title":{"rendered":"Why a Lens Diameter of 21 mm?"},"content":{"rendered":"<p>Clear vision is determined by the optical centre, not by<br \/>\nlens size. A larger diameter does not improve refraction and may cause peripheral distortions.<\/p>\n<p>Benefits of a 21 mm diameter:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Focus on optical precision<\/li>\n<li>Reduced distortions<\/li>\n<li>Lower weight for comfortable refraction<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Clear vision is determined by the optical centre, not by lens size. A larger diameter does not improve refraction and may cause peripheral distortions. Benefits of a 21 mm diameter: Focus on optical precision Reduced distortions Lower weight for comfortable   &#8230;<\/p>\n","protected":false},"author":1832,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"faq_category":[386],"class_list":["post-29811","avada_faq","type-avada_faq","status-publish","format-standard","hentry","faq_category-eco-line"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why a Lens Diameter of 21 mm? - OCULUS INT<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why a Lens Diameter of 21 mm? - OCULUS INT\" \/>\n<meta property=\"og:description\" content=\"Clear vision is determined by the optical centre, not by lens size. A larger diameter does not improve refraction and may cause peripheral distortions. 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