隨著科技進步與生活習慣的改變，傳統用相關色溫5000 K螢光燈作為印刷業標準，逐漸被受6500 K白點標準及高演色性LED的挑戰，並且在技術持續進步下，人類更加追求更高品質的觀賞體驗，希望透過照明可使人們感收到更高的喜好，進而促使社會經濟的流動。過去許多研究著重於改善演色指數的準確性，故本實驗採用2018年所發表的北美照明學會IES的 TM-30-18做為本研究演色指數，而之前研究有關心理評價的文章大部分是以實體物為主，故受到所挑選物體有不同結論產生，故本研究為了進一步探討在印刷複製上是否要更好的光源可以改善。實驗1設計為在螢幕和測試光源為相同相關色溫相關色溫且個別顯示與照明同一內容圖像場合，即軟拷貝與硬拷貝並置情況，其結果顯示在不同的相關色溫下無顯著差異，實驗2設計為比較同一圖像在不同的光譜功率分布光源照射條件，即光源的相關色溫、照度、Duv相同，但在IES TM-30-18的忠實度(Rf)，色域指數(Rg)，顏色向量圖(CVG)有所不同，該結果顯示鮮豔度與色域指數Rg和顏色向量圖形正相關，本研究進一步提出鮮豔度模型，它與相似度、偏好度和自然度高度相關。此外也提出自然度預測模型，該結果顯示通過改變光源的特定演色指數會增進觀賞體驗。

In printing industry, the 5000 K fluorescent light is usually used. However white-light LED and 6500 K monitor white point have been widely used for our life. The recent research focus on more precise color rendering index, and some research focus on the relation between light and phycological effect. This research focus on comparison between monitor and printing. We try to find whether 6500 K LED is suitable for looking at image and which light is higher rating. Experiment 1 is designed to compare the same image on the screen and the test light source at the same correlated temperature (CCT), and then basing on the result, no significant difference at different CCTs, Experiment 2 is designed to compare the same image on the different spectral power distributions (SPD) light sources. The light source was same at CCT, luminous, Duv, but difference at color fidelity index (Rf), gamut index (Rg), color vector graphic (CVG) of IES TM-30-18. The results show that vividness is positive correlation with Rg and CVG, and Rf is high correlation with similarity, preference and naturalness. Experimental results proved that people can have certain feelings by changing the particular indexes of the light source.

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