飞利浦d50灯管的色温为5000k被世界印刷业*为标准色温（icc标准），通常运用在印刷或前置出版的领域。其条件恰与白天阳光下相近，色彩虽比较正常，但不容易发现黄墨的变化，故较适合于观看原稿。其品牌有：pihlips，通用ge，osram，格林达 麦克贝斯 gretagmacbeth，gti等。产品符合标准化组织（iso）在2000年对标准观察环境和标准光源做出了规定，即iso3664:2000标准。
gretagmacbeth f20t12/50 5000k 20w made in canada
gretagmacbeth f40t12/50 5000k 20w made in canada
philips tl-d 90 de luxe 18w/950 made in holland
philips tl-d 90 de luxe 36w/950 made in holland
philips tl-d 90 graphica 18w/950 made in holland
philips tl-d 90 graphica 36w/950 made in holland
osram l18w/950 color proof daylight made in germany
osram l36w/950 color proof daylight made in germany
just daylight 5000 prographic 36w made in holland
just daylight 5000 prographic 58w made in holland
gti graphiclite 100 f17t8/gl50 d5000 color viewing lamp
gti graphiclite 100 f25t8/gl50 d5000 color viewing lamp
gti graphiclite 100 f32t8/gl50 d5000 color viewing lamp
ge ecolux f20t12-c50-eco chroma 50 20w usa