{"id":796,"date":"2017-11-17T14:55:11","date_gmt":"2017-11-17T19:55:11","guid":{"rendered":"https:\/\/designinglight.com\/?p=796"},"modified":"2017-11-17T14:55:11","modified_gmt":"2017-11-17T19:55:11","slug":"focal-point-introduces-tm-30-based-preferred-light","status":"publish","type":"post","link":"https:\/\/designinglight.com\/?p=796","title":{"rendered":"Focal Point Introduces TM-30 Based “Preferred Light”"},"content":{"rendered":"

Today Focal Point Lights of Chicago, IL introduced a series of fixtures that feature what they call Preferred Light<\/a>. \u00a0Preferred Light is based on recent studies at PNNL<\/a> and Penn State<\/a>, plus their own study<\/a>, and uses TM-30’s R<\/em>f, R<\/em>g, and Hue Bin 16 values to establish a balance of fidelity, saturation, and red rendering that is “visually appealing to humans.”<\/p>\n

The overall idea is that people seem to prefer a light source that slightly over saturated most colors, especially red. \u00a0“Using a custom LED mix, Focal Point defines Preferred Light using TM-30-15 metrics as having a fidelity (R<\/em>f) of 89, a gamut (R<\/em>g) of 107, and over-saturating Hue Bin 16, deep red content, by 9% at a [Correlated] Color Temperature of 3500K.” \u00a0So, by using the statistical measures of TM-30 and applying them to the related topic of color preference Focal Point has identified an optimized set of LED products to meet their customers’ needs.<\/p>\n

I’ll be the first to admit that it may be risky to base all of this on only three studies, but other studies have shown that the TM-30 results can be applied in this way, and are also showing us the relative importance of the various calculated values. \u00a0I’m excited to see the industry using the tools, and am looking forward to seeing the Preferred Light for myself.<\/p>\n","protected":false},"excerpt":{"rendered":"

Today Focal Point Lights of Chicago, IL introduced a series of fixtures that feature what they call Preferred Light. \u00a0Preferred Light is based on recent studies at PNNL and Penn State, plus their own study, and uses TM-30’s Rf, Rg, and Hue Bin 16 values to establish a balance of fidelity, saturation, and red rendering … Continue reading Focal Point Introduces TM-30 Based “Preferred Light”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[12,18,17,10],"tags":[61,27,47,24,58,68],"class_list":["post-796","post","type-post","status-publish","format-standard","hentry","category-color","category-design","category-light","category-luminaires","tag-color-perception","tag-color-rendering","tag-energy-efficiency","tag-led-color","tag-lighting-economics","tag-tm-30"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p4gZSw-cQ","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":803,"url":"https:\/\/designinglight.com\/?p=803","url_meta":{"origin":796,"position":0},"title":"TM-30 Rg, The Gamut Index","author":"Jason Livingston","date":"December 4, 2017","format":false,"excerpt":"In addition to an index that measures the fidelity of a light source to its reference source (Rf) IES TM-30 includes an index that indicates the change in saturation of colors called the Gamut Index and abbreviated Rg. \u00a0Rg is calculated using the same Color Evaluation Samples (CES) and underlying\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/12\/CVG.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/12\/CVG.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/12\/CVG.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":567,"url":"https:\/\/designinglight.com\/?p=567","url_meta":{"origin":796,"position":1},"title":"NEMA Misrepresents IES TM-30","author":"Jason Livingston","date":"December 21, 2015","format":false,"excerpt":"On November 12 the National Electrical Manufacturers Association (NEMA) published a position paper on IES TM-30-15. The document is here. It seems to be a willful misunderstanding and misrepresentation of TM-30. Here\u2019s how\u2026 The paper opens with NEMA\u2019s support of an improved color metric but then goes on to say\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":780,"url":"https:\/\/designinglight.com\/?p=780","url_meta":{"origin":796,"position":2},"title":"The Advantages of TM-30","author":"Jason Livingston","date":"October 30, 2017","format":false,"excerpt":"In this series of posts about IES TM-30-15 I've discussed the problems with CRI and the resistance to adopting TM-30. \u00a0In this post I'll discuss the advantages of TM-30 over CRI, and what TM-30 is and isn't. Color Samples Like CRI, TM-30 compares color samples rendered by a given test\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/10\/TM-30-Bins.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/10\/TM-30-Bins.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/10\/TM-30-Bins.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":4823,"url":"https:\/\/designinglight.com\/?p=4823","url_meta":{"origin":796,"position":3},"title":"False TM-30 Reports","author":"Jason Livingston","date":"August 20, 2025","format":false,"excerpt":"I recently received a set of lighting submittals. \u00a0In them, one manufacturer had included TM-30 Full Reports. \u00a0At first I was delighted, thinking, \"Finally, a manufacturer who's made TM-30 a default part of their documentation!\" \u00a0Here's the report. \u00a0 My excitement was followed, a few seconds later, by a sinking\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"false tm-30 report","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/08\/False-TM-30-Report-873x1024.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/08\/False-TM-30-Report-873x1024.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/08\/False-TM-30-Report-873x1024.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/08\/False-TM-30-Report-873x1024.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":491,"url":"https:\/\/designinglight.com\/?p=491","url_meta":{"origin":796,"position":4},"title":"TM-30 and Color Gamut","author":"Jason Livingston","date":"August 26, 2015","format":false,"excerpt":"You may be familiar with the idea of a color gamut from displays or from RGB LED fixtures. In both cases the gamut describes the full range of colors that the device can create. In TM-30-15 IES Method for Evaluating Light Source Color Rendition gamut (Rg) has a somewhat different\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":787,"url":"https:\/\/designinglight.com\/?p=787","url_meta":{"origin":796,"position":5},"title":"TM-30 Rf: So Big, So Strong, So Smart!","author":"Jason Livingston","date":"November 6, 2017","format":false,"excerpt":"As we know, CRI Ra and TM-30 Rf are both measurements of color fidelity. \u00a0That is, they compare a test light source to a known reference light source and measure how well the test source matches the reference source. \u00a0One of the many shortcomings of CRI Ra is that it\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/11\/CES-F32T8830.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/11\/CES-F32T8830.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/11\/CES-F32T8830.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2017\/11\/CES-F32T8830.png?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/796","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=796"}],"version-history":[{"count":3,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/796\/revisions"}],"predecessor-version":[{"id":799,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/796\/revisions\/799"}],"wp:attachment":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}