{"id":295,"date":"2025-04-28T15:27:12","date_gmt":"2025-04-28T07:27:12","guid":{"rendered":"https:\/\/www.bihec.com\/knightoptical-ko\/?p=295"},"modified":"2025-04-28T15:27:12","modified_gmt":"2025-04-28T07:27:12","slug":"knight-optical%e8%bf%9b%e5%8f%a3%e4%bb%a3%e7%90%86%e4%b8%ad%e6%80%a7%e5%af%86%e5%ba%a6%e6%bb%a4%e5%85%89%e7%89%87fnp-fnu-fnm-fng","status":"publish","type":"post","link":"https:\/\/www.bihec.com\/knightoptical-ko\/knight-optical%e8%bf%9b%e5%8f%a3%e4%bb%a3%e7%90%86%e4%b8%ad%e6%80%a7%e5%af%86%e5%ba%a6%e6%bb%a4%e5%85%89%e7%89%87fnp-fnu-fnm-fng\/","title":{"rendered":"Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG"},"content":{"rendered":"<p class=\"\" data-start=\"0\" data-end=\"143\"><a href=\"https:\/\/www.bihec.com\/knightoptical-ko\/tag\/knight-optical%e8%bf%9b%e5%8f%a3%e4%bb%a3%e7%90%86\/\" title=\"View all posts in Knight optical\u8fdb\u53e3\u4ee3\u7406\" target=\"_blank\">Knight optical\u8fdb\u53e3\u4ee3\u7406<\/a>,<a href=\"https:\/\/www.bihec.com\/knightoptical-ko\/tag\/%e4%b8%ad%e6%80%a7%e5%af%86%e5%ba%a6%e6%bb%a4%e5%85%89%e7%89%87fnp-fnu-fnm-fng\/\" title=\"View all posts in \u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG\" target=\"_blank\">\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG<\/a>,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff08Neutral Density Filters\uff09\u901a\u8fc7\u4e00\u4e2a\u57fa\u672c\u4e0a\u4e0e\u6ce2\u957f\u65e0\u5173\u7684\u6052\u5b9a\u91cf\u6765\u8870\u51cf\u5149\u7ebf\u3002\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\u65e8\u5728\u5728\u6307\u5b9a\u5149\u8c31\u8303\u56f4\u5185\u5747\u5300\u51cf\u5c11\u5149\u7684\u900f\u8fc7\u7387\uff0c\u8fd9\u79cd\u8870\u51cf\u53ef\u4ee5\u901a\u8fc7\u5438\u6536\u6216\u53cd\u5c04\u5b9e\u73b0\u3002<br data-start=\"97\" data-end=\"100\" \/>Knight Optical \u5907\u6709\u591a\u79cd\u7cfb\u5217\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff0c\u4ee5\u6ee1\u8db3\u60a8\u7684\u7279\u5b9a\u5e94\u7528\u9700\u6c42\u3002<\/p>\n<p class=\"\" data-start=\"145\" data-end=\"155\"><strong><a href=\"https:\/\/www.bihec.com\/knightoptical-ko\/tag\/knight-optical\/\" title=\"View all posts in Knight optical\" target=\"_blank\">Knight optical<\/a>\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG\u63d0\u4f9b\u7684\u7c7b\u578b\u5305\u62ec<\/strong>\uff1a<\/p>\n<ul data-start=\"156\" data-end=\"314\" data-is-last-node=\"\" data-is-only-node=\"\">\n<li class=\"\" data-start=\"156\" data-end=\"214\">\n<p class=\"\" data-start=\"158\" data-end=\"214\">\u5438\u6536\u578b\u73bb\u7483\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff08Absorptive Glass Neutral Density Filters\uff09<\/p>\n<\/li>\n<li class=\"\" data-start=\"215\" data-end=\"267\">\n<p class=\"\" data-start=\"217\" data-end=\"267\">Wratten \u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff08Wratten Neutral Density Filters\uff09<\/p>\n<\/li>\n<li class=\"\" data-start=\"268\" data-end=\"314\">\n<p class=\"\" data-start=\"270\" data-end=\"314\">\u91d1\u5c5e\u578b\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff08Metallic Neutral Density Filters\uff09<\/p>\n<\/li>\n<\/ul>\n<p><strong>Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\u4ea7\u54c1\u7cfb\u5217<\/strong>:<\/p>\n<p>FNP\/FNU\/FNM\/FNG<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_296\" aria-describedby=\"caption-attachment-296\" style=\"width: 445px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"  wp-image-296\" src=\"https:\/\/www.bihec.com\/knightoptical-ko\/wp-content\/uploads\/sites\/2132\/2025\/04\/img_680f2c19596a0.png\" alt=\"Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG\" width=\"445\" height=\"466\" srcset=\"https:\/\/www.bihec.com\/knightoptical-ko\/wp-content\/uploads\/sites\/2132\/2025\/04\/img_680f2c19596a0.png 736w, https:\/\/www.bihec.com\/knightoptical-ko\/wp-content\/uploads\/sites\/2132\/2025\/04\/img_680f2c19596a0-286x300.png 286w, https:\/\/www.bihec.com\/knightoptical-ko\/wp-content\/uploads\/sites\/2132\/2025\/04\/img_680f2c19596a0-500x524.png 500w\" sizes=\"(max-width: 445px) 100vw, 445px\" \/><figcaption id=\"caption-attachment-296\" class=\"wp-caption-text\">Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG<\/figcaption><\/figure>\n<p><span id=\"sample-permalink\"><a href=\"https:\/\/www.bihec.com\/knightoptical-ko\/?p=295&amp;preview=true\" target=\"wp-preview-295\" rel=\"noopener\">https:\/\/www.bihec.com\/knightoptical-ko\/<span id=\"editable-post-name\">Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG<\/span>\/<\/a><\/span><\/p>\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/1899844297261548935\">https:\/\/zhuanlan.zhihu.com\/p\/1899844297261548935<\/a><\/p>\n<br><div class=\"tagcloud\"><a href=\"https:\/\/www.bihec.com\/knightoptical-ko\/tag\/knight-optical%e8%bf%9b%e5%8f%a3%e4%bb%a3%e7%90%86\/\" class=\"tag-cloud-link tag-link-0 tag-link-position-1\" style=\"font-size: 22pt;\" aria-label=\"Knight optical\u8fdb\u53e3\u4ee3\u7406 (7\u4e2a\u9879\u76ee)\">Knight optical\u8fdb\u53e3\u4ee3\u7406<\/a>\n<a href=\"https:\/\/www.bihec.com\/knightoptical-ko\/tag\/%e4%b8%ad%e6%80%a7%e5%af%86%e5%ba%a6%e6%bb%a4%e5%85%89%e7%89%87fnp-fnu-fnm-fng\/\" class=\"tag-cloud-link tag-link-1 tag-link-position-2\" style=\"font-size: 8pt;\" aria-label=\"\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG (1\u4e2a\u9879\u76ee)\">\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG<\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff08Neutral Density Filters\uff09\u901a\u8fc7\u4e00\u4e2a\u57fa\u672c\u4e0a\u4e0e\u6ce2\u957f\u65e0\u5173\u7684\u6052\u5b9a\u91cf <\/p>\n","protected":false},"author":27,"featured_media":296,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_vp_format_video_url":"","_vp_image_focal_point":[]},"categories":[41],"tags":[13,60],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG<\/title>\n<meta name=\"description\" content=\"Knight optical\u8fdb\u53e3\u4ee3\u7406,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247FNP\/FNU\/FNM\/FNG,\u4e2d\u6027\u5bc6\u5ea6\u6ee4\u5149\u7247\uff08Neutral Density 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