1.0bokehsommelierhttps://bokehsommelier.comrich600338<blockquote class="wp-embedded-content" data-secret="t15S9zQ4Z2"><a href="https://bokehsommelier.com/index.php/2026/04/08/astro-berlin-cooke-connection-75mm/">Astro Berlin’s Secret Connection to Cooke — And the Most Enigmatic 75mm Lens Ever Made</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://bokehsommelier.com/index.php/2026/04/08/astro-berlin-cooke-connection-75mm/embed/#?secret=t15S9zQ4Z2" width="600" height="338" title="“Astro Berlin’s Secret Connection to Cooke — And the Most Enigmatic 75mm Lens Ever Made” — bokehsommelier" data-secret="t15S9zQ4Z2" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://bokehsommelier.com/wp-includes/js/wp-embed.min.js </script> Here’s a little story about Astro’s connection to Cooke, strange coatings, and the most enigmatic 75mm lens out there. Most lens designs are nowhere near as revolutionary as marketing people and historians alike would have you believe, but more so an evolution of previous scientific and engineering contrivances. Paul Rudolph’s oh-so-revolutionary Planar was technically just […]