{"id":1090,"date":"2023-02-28T15:41:35","date_gmt":"2023-02-28T14:41:35","guid":{"rendered":"https:\/\/iso3200.org\/blog\/?page_id=1090"},"modified":"2025-09-08T21:28:28","modified_gmt":"2025-09-08T20:28:28","slug":"pentax-110-mount-lenses","status":"publish","type":"page","link":"https:\/\/iso3200.org\/blog\/references\/pentax-110-mount-lenses\/","title":{"rendered":"Pentax 110 mount lenses"},"content":{"rendered":"\n<p>Pentax 110 mount is a fully automatic lens mount designed in 1978 for 110 format film, for 13\u00d717mm image size. It is the only complete miniature, interchangeable-lens SLR system manufactured for the 110 format. The mount has two tabs and a focal flange distance of 27mm. Lenses don&#8217;t have an adjustable aperture, the camera body has a leaf shutter that is used as an aperture and there is no communication between lenses and a camera.<\/p>\n\n\n\n<p>The crop factor for the Pentax 110 mount is 2\u00d7.<\/p>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pentax-110-lenses\">Pentax-110 lenses<\/h2>\n\n\n\n<p>Since lenses don&#8217;t have an adjustable aperture, all lenses feature a fixed \u0192\/2.8 design. PF 18mm lens is a pan-focus design, it has no focusing ring, it is focused to a hyperfocal distance &#8211; from 1.75m to infinity.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pentax-110 <strong>18mm F2.8<\/strong> <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">35mm-equivalent<\/mark><\/li>\n\n\n\n<li>Pentax-110 PF <strong>18mm F2.8<\/strong> <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">35mm-equivalent<\/mark>, <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-purple-color\">pan-focus lens<\/mark><\/li>\n\n\n\n<li>Pentax-110 Zoom <strong>20\u2013\u200d40mm F2.8<\/strong> <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">40\u2013\u200d80mm-equivalent<\/mark><\/li>\n\n\n\n<li>Pentax-110 <strong>24mm F2.8<\/strong> <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">~50mm-equivalent<\/mark><\/li>\n\n\n\n<li>Pentax-110 <strong>50mm F2.8<\/strong> <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">100mm-equivalent<\/mark><\/li>\n\n\n\n<li>Pentax-110 <strong>70mm F2.8<\/strong> <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">140mm-equivalent<\/mark><\/li>\n<\/ul>\n\n\n<style><\/style><style><\/style>\n<div class=\"wp-block-greenshift-blocks-iconbox gspb_iconBox gspb_iconBox-id-gsbp-1244b15\" id=\"gspb_iconBox-id-gsbp-1244b15\"><a class=\"gspb-containerlink\" href=\"#top\" title=\"Go to the top of the page\" rel=\"noopener\"><div class=\"gspb_iconBox__wrapper\" style=\"display:inline-flex\"><svg class=\"\" style=\"display:inline-block;vertical-align:middle\" width=\"72\" height=\"72\" viewBox=\"0 0 896 1024\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path style=\"fill:#565D66\" d=\"M12.202 523.798l39.598 39.598c9.372 9.372 24.568 9.372 33.942 0l310.258-310.26v682.864c0 13.254 10.746 24 24 24h56c13.254 0 24-10.746 24-24v-682.864l310.26 310.26c9.372 9.372 24.568 9.372 33.942 0l39.598-39.598c9.372-9.372 9.372-24.568 0-33.942l-418.83-418.826c-9.372-9.372-24.568-9.372-33.942 0l-418.826 418.828c-9.374 9.372-9.374 24.568 0 33.94z\"><\/path><\/svg><\/div><\/a><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"references\">References<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Pentax_Auto_110\" target=\"_blank\" rel=\"noreferrer noopener\">Pentax Auto 110<\/a> on Wikipedia<\/li>\n\n\n\n<li><a href=\"https:\/\/www.pentaxforums.com\/lensreviews\/Pentax-Auto-110-Lenses-i56.html\" target=\"_blank\" rel=\"noreferrer noopener\">Pentax Auto 110 Lenses<\/a> on PentaxForums<\/li>\n<\/ul>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">Last update: 28. 2. 2023.<\/mark><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pentax 110 mount is a fully automatic lens mount designed in 1978 for 110 format film, for 13\u00d717mm image size. It is the only complete miniature, interchangeable-lens SLR system manufactured for the 110 format. The mount has two tabs and a focal flange distance of &hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":82,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"_gspb_post_css":"#gspb_iconBox-id-gsbp-1244b15 svg{height:10px!important;width:10px!important;min-width:10px!important;margin:0!important}#gspb_iconBox-id-gsbp-1244b15 a{justify-content:flex-end;display:flex}#gspb_iconBox-id-gsbp-1244b15 svg,#gspb_iconBox-id-gsbp-1244b15 svg path{fill:var(--gs-colorcustomcolor2, #2856ad)!important}#gspb_iconBox-id-gsbp-1244b15 .gspb_iconBox__wrapper:hover svg,#gspb_iconBox-id-gsbp-1244b15 .gspb_iconBox__wrapper:hover svg path,#gspb_iconBox-id-gsbp-1244b15 svg:hover,#gspb_iconBox-id-gsbp-1244b15 svg:hover path{fill:var(--gs-colorcustomcolor4, #152d5a)!important}#gspb_iconBox-id-gsbp-1244b15 .gspb_iconBox__wrapper:hover{background-color:var(--gs-colorcustomcolor1, #fafafa)!important}#gspb_iconBox-id-gsbp-1244b15 .gspb_iconBox__wrapper{border-radius:50%;margin:0;padding:.75rem}","inline_featured_image":false,"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-1090","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/pages\/1090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/comments?post=1090"}],"version-history":[{"count":10,"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/pages\/1090\/revisions"}],"predecessor-version":[{"id":5209,"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/pages\/1090\/revisions\/5209"}],"up":[{"embeddable":true,"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/pages\/82"}],"wp:attachment":[{"href":"https:\/\/iso3200.org\/blog\/wp-json\/wp\/v2\/media?parent=1090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}