{"id":141539,"date":"2026-11-06T07:26:35","date_gmt":"2026-11-06T06:26:35","guid":{"rendered":"https:\/\/cinegear.nl\/product\/irix-11mm-f-4-0-blackstone-pentax\/"},"modified":"2026-11-06T07:26:35","modified_gmt":"2026-11-06T06:26:35","slug":"irix-11mm-f-4-0-blackstone-pentax","status":"publish","type":"product","link":"https:\/\/cinegear.nl\/tr\/product\/irix-11mm-f-4-0-blackstone-pentax\/","title":{"rendered":"Irix 11mm f\/4.0 Blackstone Pentax"},"content":{"rendered":"<div class=\"row\"  id=\"row-371369212\">\n\n\t<div id=\"col-1659488799\" class=\"col medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-4201062893\" class=\"text\">\n\t\t\n<h3><strong>Genel Bak\u0131\u015f<\/strong><\/h3>\n\t\t\n<style>\n#text-4201062893 {\n  font-size: 1.2rem;\n}\n@media (min-width:550px) {\n  #text-4201062893 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-1659488799 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 0px 0px -20px 0px;\n}\n@media (min-width:550px) {\n  #col-1659488799 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n\t<div id=\"col-442955555\" class=\"col medium-10 small-12 large-10\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-1663303057\" class=\"text\">\n\t\t\n<p>The Irix 11mm f\/4 Blackstone is an ultra-wide prime lens designed for Pentax K-mount DSLRs and full-frame format. Its rectilinear optical design uses aspherical, extra-low dispersion and high-refractive index elements.<\/p>\n<p>The lens features a Neutrino coating, manual focus with focus lock, and a weather-sealed magnesium alloy housing. UV fluorescent engraved markings and depth-of-field and focus-distance scales support manual operation.<\/p>\n\t\t\n<style>\n#text-1663303057 {\n  font-size: 0.9rem;\n}\n@media (min-width:550px) {\n  #text-1663303057 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-442955555 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 0px 0px -30px 0px;\n}\n@media (min-width:550px) {\n  #col-442955555 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<style>\n#row-371369212 > .col > .col-inner {\n  padding: 0px 0px 0px 0px;\n}\n@media (min-width:550px) {\n  #row-371369212 > .col > .col-inner {\n    padding: 0px 0px 10px 0px;\n  }\n}\n<\/style>\n<\/div>\n<div class=\"is-divider divider clearfix\" style=\"max-width:1600px;height:2px;\"><\/div>\n<div class=\"row\"  id=\"row-742485464\">\n\n\t<div id=\"col-1318622251\" class=\"col medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-2911548884\" class=\"text\">\n\t\t\n<h3><strong>Features<\/strong><\/h3>\n\t\t\n<style>\n#text-2911548884 {\n  font-size: 1.2rem;\n}\n@media (min-width:550px) {\n  #text-2911548884 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-1318622251 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 7px 0px -20px 0px;\n}\n@media (min-width:550px) {\n  #col-1318622251 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n\t<div id=\"col-1184196635\" class=\"col medium-10 small-12 large-10\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-3982178244\" class=\"text\">\n\t\t\n<ul>\n<li>Three aspherical elements<\/li>\n<li>Two ED and four HR elements<\/li>\n<li>Neutrino coating for controlling flare and ghosting<\/li>\n<li>UV fluorescent engraved markings<\/li>\n<li>Depth-of-field and focus-distance scales<\/li>\n<li>Rounded nine-blade diaphragm<\/li>\n<\/ul>\n\t\t\n<style>\n#text-3982178244 {\n  font-size: 0.9rem;\n}\n@media (min-width:550px) {\n  #text-3982178244 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-1184196635 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 0px 0px -30px 0px;\n}\n@media (min-width:550px) {\n  #col-1184196635 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<style>\n#row-742485464 > .col > .col-inner {\n  padding: 0px 0px 0px 0px;\n}\n@media (min-width:550px) {\n  #row-742485464 > .col > .col-inner {\n    padding: 30px 0px 10px 0px;\n  }\n}\n<\/style>\n<\/div>\n<div class=\"is-divider divider clearfix\" style=\"max-width:1600px;height:2px;\"><\/div>\n<div class=\"row\"  id=\"row-1174176320\">\n\n\t<div id=\"col-1381378972\" class=\"col medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-2480934769\" class=\"text\">\n\t\t\n<h3><strong>Included<br \/>\n<\/strong><\/h3>\n\t\t\n<style>\n#text-2480934769 {\n  font-size: 1.2rem;\n}\n@media (min-width:550px) {\n  #text-2480934769 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-1381378972 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 7px 0px -20px 0px;\n}\n@media (min-width:550px) {\n  #col-1381378972 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n\t<div id=\"col-448278510\" class=\"col medium-10 small-12 large-10\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-2912369945\" class=\"text\">\n\t\t\n<ul>\n<li>IRIX 11mm f\/4 Blackstone Lens for Pentax K<\/li>\n<li>Front Lens Cap<\/li>\n<li>2 x IRIX Rear Cap for Pentax K-Mount Lenses<\/li>\n<li>IRIX Hard Lens Case (Black)<\/li>\n<\/ul>\n\t\t\n<style>\n#text-2912369945 {\n  font-size: 0.9rem;\n}\n@media (min-width:550px) {\n  #text-2912369945 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-448278510 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 0px 0px -30px 0px;\n}\n@media (min-width:550px) {\n  #col-448278510 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<style>\n#row-1174176320 > .col > .col-inner {\n  padding: 0px 0px 0px 0px;\n}\n@media (min-width:550px) {\n  #row-1174176320 > .col > .col-inner {\n    padding: 30px 0px 10px 0px;\n  }\n}\n<\/style>\n<\/div>\n<div class=\"is-divider divider clearfix\" style=\"max-width:1600px;height:2px;\"><\/div>\n<div class=\"row\"  id=\"row-1119477045\">\n\n\t<div id=\"col-2037950713\" class=\"col medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-915599650\" class=\"text\">\n\t\t\n<h3><strong>Specifications<\/strong><\/h3>\n\t\t\n<style>\n#text-915599650 {\n  font-size: 1.2rem;\n}\n@media (min-width:550px) {\n  #text-915599650 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-2037950713 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 7px 0px -20px 0px;\n}\n@media (min-width:550px) {\n  #col-2037950713 > .col-inner {\n    padding: 0px 0px 0px 0px;\n    margin: 0px 0px 0px 0px;\n  }\n}\n<\/style>\n\t<\/div>\n\n\t\n\n\t<div id=\"col-1798134462\" class=\"col medium-10 small-12 large-10\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-2758368867\" class=\"text\">\n\t\t\n<table>\n<tbody>\n<tr>\n<th>Focal Length<\/th>\n<td>11mm<\/td>\n<\/tr>\n<tr>\n<th>Aperture<\/th>\n<td>Maximum: f\/4 Minimum: f\/22<\/td>\n<\/tr>\n<tr>\n<th>Lens Mount<\/th>\n<td>Pentax K<\/td>\n<\/tr>\n<tr>\n<th>Lens Format Coverage<\/th>\n<td>Full-Frame<\/td>\n<\/tr>\n<tr>\n<th>Angle of View<\/th>\n<td>126\u00b0<\/td>\n<\/tr>\n<tr>\n<th>Minimum Focus Distance<\/th>\n<td>10.8&quot; \/ 27.5 cm<\/td>\n<\/tr>\n<tr>\n<th>Optical Design<\/th>\n<td>16 Elements in 10 Groups<\/td>\n<\/tr>\n<tr>\n<th>Aperture\/Iris Blades<\/th>\n<td>9, Rounded<\/td>\n<\/tr>\n<tr>\n<th>Focus Type<\/th>\n<td>Manual Focus<\/td>\n<\/tr>\n<tr>\n<th>Image Stabilization<\/th>\n<td>No<\/td>\n<\/tr>\n<tr>\n<th>Filter Size<\/th>\n<td>Gel Filter (Rear)<\/td>\n<\/tr>\n<tr>\n<th>Dimensions<\/th>\n<td>4.6 x 4.1&quot; \/ 118 x 103 mm (Diameter x Length)<\/td>\n<\/tr>\n<tr>\n<th>Weight<\/th>\n<td>1.7 lb \/ 790 g \/ 0.77 kg<\/td>\n<\/tr>\n<tr>\n<th>Package Weight<\/th>\n<td>3.11 lb \/ 1.41 kg<\/td>\n<\/tr>\n<tr>\n<th>Box Dimensions (LxWxH)<\/th>\n<td>6.7 x 5.65 x 5.65&quot; \/ 17.02 x 14.35 x 14.35 cm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\n<style>\n#text-2758368867 {\n  font-size: 0.9rem;\n}\n@media (min-width:550px) {\n  #text-2758368867 {\n    font-size: 1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-1798134462 > .col-inner {\n  padding: 0px 0px 0px 0px;\n  margin: 0px 0px 0px 0px;\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<style>\n#row-1119477045 > .col > .col-inner {\n  padding: 0px 0px 0px 0px;\n}\n@media (min-width:550px) {\n  #row-1119477045 > .col > .col-inner {\n    padding: 30px 0px 10px 0px;\n  }\n}\n<\/style>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li>Pentax K-Mount\/Full-Frame Format<\/li>\n<li>Aperture Range: f\/4 to f\/22<\/li>\n<li>Three Aspherical Elements<\/li>\n<li>Two ED and Four HR Elements<\/li>\n<li>Neutrino Coating<\/li>\n<li>Manual Focus Design with Focus Lock<\/li>\n<li>UV Fluorescent Engraved Markings<\/li>\n<li>Depth of Field and Focus Distance Scales<\/li>\n<li>Weather-Sealed Magnesium Alloy Housing<\/li>\n<li>Rounded Nine-Blade Diaphragm<\/li>\n<\/ul>","protected":false},"featured_media":141524,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"pwb-brand":[9934],"product_cat":[10800],"product_tag":[],"class_list":["post-141539","product","type-product","status-publish","has-post-thumbnail","pwb-brand-irix","product_cat-wide-angle-foto-lens","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":{"supplier":"europepv","buy_price":"453.95","last_sync":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Irix 11mm f\/4.0 Blackstone Pentax | Cinegear Amsterdam<\/title>\n<meta name=\"description\" content=\"Pentax K-Mount\/Full-Frame Format Aperture Range: f\/4 to f\/22 Three Aspherical Elements Two ED and Four HR Elements Neutrino Coating Manual Focus Design with Focus Lock UV Fluorescent Engraved Markings Depth of Field and 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