====== 购物指南 ======
  * 基恩士[[https://www.keyence.com.cn/|www.keyence.com.cn]]
===== 电视 =====
  * 这篇文章讲得很不错：[[https://zhuanlan.zhihu.com/p/366855296]]
  * 关于电视尺寸：[[https://www.rtings.com/tv/reviews/by-size/size-to-distance-relationship]]
  * 合适的观看视觉角度 30~40 度 {{ :public:others:fov-compare.png?400 |}}
  * 视觉角度对应的距离：<code>
Screen	Recommended  	Recommended
Size	Mixed Distance	Cinema Distance
	(30°)		(40°)

25"	3.4' (1.04 m)	2.5' (0.77 m)
30"	4.1' (1.24 m)	3' (0.92 m)
35"	4.8' (1.45 m)	3.5' (1.07 m)
40"	5.5' (1.66 m)	4' (1.22 m)
45"	6.1' (1.86 m)	4.5' (1.37 m)
50"	6.8' (2.06 m)	5' (1.53 m)
55"	7.5' (2.28 m)	5.5' (1.68 m)
60"	8.2' (2.48 m)	6' (1.83 m)
65"	8.9' (2.69 m)	6.5' (1.98 m)
70"	9.5' (2.9 m)	7' (2.13 m)
75"	10.2' (3.1 m)	7.5' (2.29 m)
80"	10.9' (3.31 m)	8' (2.44 m)
85"	11.6' (3.52 m)	8.5' (2.59 m)
</code>

  * 不同分辨率对应的适合距离(过近有颗粒感，过远则与低分辨率无区别)：{{ :public:others:optimal-viewing-distance-television-graph-size.png |}}
  * 杜比视界(Dolby Vision)
  * HDR10, HDR10+
  * 尼特(nit): 亮度单位