{"version":"1.0","provider_name":"","provider_url":"https:\/\/lightingrecipe.com\/de","author_name":"LRS Admin","author_url":"https:\/\/lightingrecipe.com\/de\/author\/77026pwpadmin\/","title":"TM-30 and SDCM -","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"fJ0v3sMInd\"><a href=\"https:\/\/lightingrecipe.com\/de\/tm-30-and-sdcm\/\">TM-30 und SDCM<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/lightingrecipe.com\/de\/tm-30-and-sdcm\/embed\/#?secret=fJ0v3sMInd\" width=\"600\" height=\"338\" title=\"&#8222;TM-30 and SDCM&#8220; &#8211; \" data-secret=\"fJ0v3sMInd\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!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);\n\/\/# sourceURL=https:\/\/lightingrecipe.com\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>","description":"What is TM-30? The IES TM-30 is a color rendering evaluation method introduced by the Illuminating Engineering Society (IES) in 2015 to overcome the limitations of the traditional Ra (CRI) metric. TM-30 offers a more comprehensive and accurate approach to assessing the color rendering performance of a light source, providing a much deeper insight than conventional indices like Ra.Unlike CRI, which only uses 8 color samples, TM-30 evaluates 99 color samples\u2014resulting in a more robust and realistic assessment of how a light source renders colors. Color Fidelity Index (Rf)The Rf measures how accurately a light source reproduces colors compared to a reference light source\u2014similar to the CRI method but using TM-30\u2019s expanded 99 color samples. A higher Rf score indicates better color accuracy, with a perfect score of 100 representing a light source that renders colors identically to the reference source. Gamut Index (Rg)The Rg measures the saturation of colors rendered by a light source compared to a reference. It provides valuable information about the intensity and vibrancy of colors. \ud83d\udd39Rg = 100: Matches the reference source\u2019s color saturation \ud83d\udd39Rg &gt; 100: Indicates oversaturation (colors appear more intense) \ud83d\udd39Rg &lt; 100: Indicates desaturation (colors appear more muted) Together, Rf and Rg provide a complete picture of a light source&#8217;s color performance, with Rg adding valuable information on color vividness and intensity. Color Vector GraphicWhile Rf and Rg provide numeric values, the Color Vector Graphic gives a visual representation of color saturation differences. \ud83d\udd39Black circle = Reference light \ud83d\udd39Red shape = Test light \ud83d\udd39Red lines inside the black circle = Desaturation of those hues \ud83d\udd39Red lines outside the black circle = Oversaturation of those hues \ud83d\udd39Overlapping lines = No change; hues are rendered the same What is SDCM (Standard Deviation Color Matching)? SDCM has the same meaning as a MacAdam ellipse. It\u2019s a unit used in lighting to describe how much a color deviates from a reference color. SDCM defines a zone in the CIE (x, y) color space within which people can perceive color variations at a given color temperature. The American standard ANSI C78.376-2014 specifies reference points and sizes for six MacAdam ellipse sets, each corresponding to a specific color temperature. The higher the SDCM number, the greater the color deviation and the more noticeable the difference. Conversely, a lower SDCM number indicates a smaller, less perceptible color shift. In simple terms: \ud83d\udd391 SDCM: No visible color difference \ud83d\udd392\u20133 SDCM: Barely noticeable \ud83d\udd394+ SDCM: Clearly noticeable Rf-Rg Plot GraphThis plot simply graphs Rf against Rg, offering a clear visual comparison of color rendering quality across different light sources. It\u2019s a practical and insightful tool for evaluating and selecting lighting."}