[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"knowledge-\u002Fapi\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F04-exposure-triangle":3,"knowledge-related-\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F04-exposure-triangle":545,"knowledge-series-\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F04-exposure-triangle":572},{"source":4,"connector":5,"page":6},"sqlite","better-sqlite3",{"path":7,"title":8,"description":9,"category":10,"tags":11,"date":15,"pinned":16,"draft":16,"body":17,"seo":541,"stem":542,"id":543,"extension":544},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F04-exposure-triangle","曝光三要素总览","曝光：传感器接收到的光量是否合适。过亮叫过曝（高光死白），过暗叫欠曝（暗部死黑）。控制曝光的三根「支柱」是：光圈、快门、ISO。","生活笔记",[12,13,14],"photography","basics","exposure-triangle","2024-11-13",false,{"type":18,"value":19,"toc":522},"minimark",[20,23,43,47,58,65,68,130,134,141,197,211,218,222,232,236,263,267,270,291,298,301,305,308,311,314,318,321,325,413,419,422,469,473,476,503,506],[21,22,8],"h1",{"id":8},[24,25,26,30,31,34,35,38,39,42],"p",{},[27,28,29],"strong",{},"曝光","：传感器接收到的光量是否合适。过亮叫",[27,32,33],{},"过曝","（高光死白），过暗叫",[27,36,37],{},"欠曝","（暗部死黑）。控制曝光的三根「支柱」是：",[27,40,41],{},"光圈、快门、ISO","。",[44,45,46],"h2",{"id":46},"曝光三角",[48,49,54],"pre",{"className":50,"code":52,"language":53},[51],"language-text","           光圈（Aperture）\n              ╱    ╲\n             ╱      ╲\n            ╱  曝光   ╲\n           ╱   平衡    ╲\n    快门 ───────────── ISO\n  (Shutter)            (感光度)\n","text",[55,56,52],"code",{"__ignoreMap":57},"",[24,59,60,61,64],{},"三者相互制约：",[27,62,63],{},"改变一个，另两个必须跟着变","，才能维持同等亮度（除非你有意变亮\u002F变暗）。",[44,66,67],{"id":67},"三要素各自管什么",[69,70,71,87],"table",{},[72,73,74],"thead",{},[75,76,77,81,84],"tr",{},[78,79,80],"th",{},"要素",[78,82,83],{},"控制什么",[78,85,86],{},"画面副作用",[88,89,90,104,117],"tbody",{},[75,91,92,98,101],{},[93,94,95],"td",{},[27,96,97],{},"光圈",[93,99,100],{},"进光量、景深",[93,102,103],{},"背景虚实",[75,105,106,111,114],{},[93,107,108],{},[27,109,110],{},"快门",[93,112,113],{},"曝光时间、运动模糊",[93,115,116],{},"凝固或拖影运动",[75,118,119,124,127],{},[93,120,121],{},[27,122,123],{},"ISO",[93,125,126],{},"对传感器电信号的增益（放大）",[93,128,129],{},"噪点、动态范围下降",[44,131,133],{"id":132},"互易律同等曝光","互易律（同等曝光）",[24,135,136,137,140],{},"在光线不变时，下面组合",[27,138,139],{},"亮度相近","（简化理解）：",[69,142,143,156],{},[72,144,145],{},[75,146,147,149,151,153],{},[78,148,97],{},[78,150,110],{},[78,152,123],{},[78,154,155],{},"说明",[88,157,158,172,185],{},[75,159,160,163,166,169],{},[93,161,162],{},"f\u002F2.8",[93,164,165],{},"1\u002F500s",[93,167,168],{},"100",[93,170,171],{},"大光圈 + 快快门 + 低 ISO",[75,173,174,177,180,182],{},[93,175,176],{},"f\u002F5.6",[93,178,179],{},"1\u002F125s",[93,181,168],{},[93,183,184],{},"光圈收 2 档，快门慢 2 档",[75,186,187,189,191,194],{},[93,188,162],{},[93,190,179],{},[93,192,193],{},"400",[93,195,196],{},"快门慢 2 档，ISO 提 2 档",[24,198,199,202,203,206,207,210],{},[27,200,201],{},"收一档光圈","（如 f\u002F2.8 → f\u002F4）进光减半 → 快门需",[27,204,205],{},"慢一倍","（1\u002F500 → 1\u002F250），或 ISO ",[27,208,209],{},"提一倍","（100 → 200），才能保持同样曝光。",[24,212,213,214,217],{},"这一「差一倍」称为 ",[27,215,216],{},"1 档（1 stop）","。光圈、快门、ISO 均以档为单位联动，比死记某个组合更重要。",[44,219,221],{"id":220},"曝光值-ev了解","曝光值 EV（了解）",[24,223,224,227,228,231],{},[27,225,226],{},"EV（Exposure Value）"," 是曝光亮度的对数刻度；+1 EV = 亮度翻倍，-1 EV = 减半。",[229,230],"br",{},"\n曝光补偿 +1 EV、快门慢 1 档、ISO 提 1 档，在互易律下对画面亮度的影响同级（创意上快门还带来运动差异）。",[44,233,235],{"id":234},"先定谁后调谁实战思路","先定谁，后调谁（实战思路）",[237,238,239,249,257],"ol",{},[240,241,242,245,246,248],"li",{},[27,243,244],{},"运动主体"," → 先定",[27,247,110],{},"（够快才清晰）→ 再调光圈 \u002F ISO。",[240,250,251,245,254,256],{},[27,252,253],{},"人像虚化",[27,255,97],{},"（要多虚）→ 再调快门 \u002F ISO。",[240,258,259,262],{},[27,260,261],{},"夜景弱光"," → 快门有上限（手持约 1\u002F焦距）→ 开大光圈 → 最后提 ISO。",[44,264,266],{"id":265},"曝光是否正确","曝光是否「正确」",[24,268,269],{},"摄影没有唯一标准答案：",[271,272,273,279,285],"ul",{},[240,274,275,278],{},[27,276,277],{},"高调","：明亮、少暗部，适合清新人像、雪景。",[240,280,281,284],{},[27,282,283],{},"低调","：暗调、强调轮廓，适合情绪片。",[240,286,287,290],{},[27,288,289],{},"准确曝光","：主体细节保留，高光暗部可后期拉回（RAW 时）。",[24,292,293,294,297],{},"学会看",[27,295,296],{},"直方图","（上手篇详述）比死记「零曝光补偿」更重要。",[44,299,300],{"id":300},"常见档位记忆",[302,303,304],"h3",{"id":304},"光圈每档约差一倍进光",[24,306,307],{},"f\u002F1.4 → f\u002F2 → f\u002F2.8 → f\u002F4 → f\u002F5.6 → f\u002F8 → f\u002F11 → f\u002F16",[302,309,310],{"id":310},"快门每档约差一倍时间",[24,312,313],{},"1\u002F1000 → 1\u002F500 → 1\u002F250 → 1\u002F125 → 1\u002F60 → 1\u002F30 …",[302,315,317],{"id":316},"iso-每档约差一倍感光","ISO 每档约差一倍感光",[24,319,320],{},"100 → 200 → 400 → 800 → 1600 → 3200 …",[302,322,324],{"id":323},"全档对照相邻一格-1-stop","全档对照（相邻一格 = 1 stop）",[69,326,327,340],{},[72,328,329],{},[75,330,331,334,337],{},[78,332,333],{},"光圈（全档）",[78,335,336],{},"快门（全档示例）",[78,338,339],{},"ISO（全档）",[88,341,342,352,362,371,381,391,402],{},[75,343,344,347,350],{},[93,345,346],{},"f\u002F1.4",[93,348,349],{},"1\u002F1000s",[93,351,168],{},[75,353,354,357,359],{},[93,355,356],{},"f\u002F2",[93,358,165],{},[93,360,361],{},"200",[75,363,364,366,369],{},[93,365,162],{},[93,367,368],{},"1\u002F250s",[93,370,193],{},[75,372,373,376,378],{},[93,374,375],{},"f\u002F4",[93,377,179],{},[93,379,380],{},"800",[75,382,383,385,388],{},[93,384,176],{},[93,386,387],{},"1\u002F60s",[93,389,390],{},"1600",[75,392,393,396,399],{},[93,394,395],{},"f\u002F8",[93,397,398],{},"1\u002F30s",[93,400,401],{},"3200",[75,403,404,407,410],{},[93,405,406],{},"f\u002F11",[93,408,409],{},"1\u002F15s",[93,411,412],{},"6400",[24,414,415,416,418],{},"同一行左右",[27,417,139],{},"（互易律）。厂商常提供 1\u002F3 档微调，如 f\u002F5.6 与 f\u002F6.3 差 1\u002F3 档而非全档。",[44,420,421],{"id":421},"与拍摄模式的关系",[69,423,424,437],{},[72,425,426],{},[75,427,428,431,434],{},[78,429,430],{},"模式",[78,432,433],{},"你优先定",[78,435,436],{},"相机补",[88,438,439,449,458],{},[75,440,441,444,446],{},[93,442,443],{},"A 档",[93,445,97],{},[93,447,448],{},"快门（+ 可设 ISO 自动）",[75,450,451,454,456],{},[93,452,453],{},"S 档",[93,455,110],{},[93,457,97],{},[75,459,460,463,466],{},[93,461,462],{},"M 档",[93,464,465],{},"光圈 + 快门",[93,467,468],{},"无；ISO 常手动或 Auto ISO",[44,470,472],{"id":471},"练习室内窗边人像起点","练习：室内窗边人像（起点）",[24,474,475],{},"假设窗边柔和光：",[237,477,478,487,494,497],{},[240,479,480,481,484,485,42],{},"模式 ",[27,482,483],{},"A","，光圈 ",[27,486,162],{},[240,488,489,490,493],{},"观察快门是否 ≥ ",[27,491,492],{},"1\u002F125","（全画幅 50mm 左右）；若太慢，提 ISO 到 400～800。",[240,495,496],{},"拍三张：ISO 100 \u002F 400 \u002F 1600 对比噪点。",[240,498,499,500,502],{},"同场景改 ",[27,501,395],{},"，看背景虚化变化与快门变慢。",[44,504,505],{"id":505},"小结",[271,507,508,511,517],{},[240,509,510],{},"曝光 = 光圈 + 快门 + ISO 的平衡。",[240,512,513,516],{},[27,514,515],{},"创意优先","：先决定要不要虚化、要不要凝固运动，再凑曝光。",[240,518,519,520,42],{},"接下来三篇分别深入：",[27,521,41],{},{"title":57,"searchDepth":523,"depth":523,"links":524},2,[525,526,527,528,529,530,531,538,539,540],{"id":46,"depth":523,"text":46},{"id":67,"depth":523,"text":67},{"id":132,"depth":523,"text":133},{"id":220,"depth":523,"text":221},{"id":234,"depth":523,"text":235},{"id":265,"depth":523,"text":266},{"id":300,"depth":523,"text":300,"children":532},[533,535,536,537],{"id":304,"depth":534,"text":304},3,{"id":310,"depth":534,"text":310},{"id":316,"depth":534,"text":317},{"id":323,"depth":534,"text":324},{"id":421,"depth":523,"text":421},{"id":471,"depth":523,"text":472},{"id":505,"depth":523,"text":505},{"title":8,"description":9},"knowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F04-exposure-triangle","knowledge\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F04-exposure-triangle.md","md",{"items":546},[547,552,556,560,564,568],{"path":548,"title":549,"description":550,"category":10,"score":551},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F02-camera-parts","相机结构与按键","拿到相机后，先熟悉机身各部位名称与必改的设置项，避免拍摄时手忙脚乱。",9,{"path":553,"title":554,"description":555,"category":10,"score":551},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F05-aperture","光圈详解","光圈（Aperture）是镜头内由叶片组成的可调光阑。f 值越小，孔越大，进光越多，景深越浅。",{"path":557,"title":558,"description":559,"category":10,"score":551},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F10-focus-modes","对焦模式与对焦点","对焦决定画面中哪一段距离最清晰。选错对焦模式是新手糊片的首要原因之一。",{"path":561,"title":562,"description":563,"category":10,"score":551},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F03-lens-basics","镜头基础","镜头是相机的「眼睛」。同一机身换不同镜头，视角、虚化、最近对焦距离都会改变。本节讲清初学者最需要的镜头知识。",{"path":565,"title":566,"description":567,"category":10,"score":551},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F08-exposure-metering","测光与曝光补偿","相机通过测光系统判断场景亮度，并给出推荐曝光。理解测光模式与曝光补偿，能减少「脸太黑、雪太白」的翻车。",{"path":569,"title":570,"description":571,"category":10,"score":551},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F01-camera-types","认识相机：类型与选择","摄影的第一步不是买最贵的机身，而是搞清楚你手里的设备属于哪一类、适合拍什么。本节梳理常见相机形态，帮你建立整体认知。",{"series":573,"title":13,"items":574,"index":534,"prev":607,"next":608},"life-notes\u002Fphoto-creation\u002Fbasics",[575,577,579,581,582,584,588,592,594,598,600,603],{"path":569,"title":570,"date":576,"pinned":16},"2025-06-18",{"path":548,"title":549,"date":578,"pinned":16},"2026-07-21",{"path":561,"title":562,"date":580,"pinned":16},"2026-03-06",{"path":7,"title":8,"date":15,"pinned":16},{"path":553,"title":554,"date":583,"pinned":16},"2026-06-05",{"path":585,"title":586,"date":587,"pinned":16},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F06-shutter-speed","快门速度详解","2024-12-26",{"path":589,"title":590,"date":591,"pinned":16},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F07-iso","ISO 感光度详解","2025-04-06",{"path":565,"title":566,"date":593,"pinned":16},"2025-07-20",{"path":595,"title":596,"date":597,"pinned":16},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F09-white-balance","白平衡与色温","2025-03-19",{"path":557,"title":558,"date":599,"pinned":16},"2026-03-27",{"path":601,"title":602,"date":597,"pinned":16},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F11-file-formats","RAW 与 JPEG",{"path":604,"title":605,"date":606,"pinned":16},"\u002Fknowledge\u002Flife-notes\u002Fphoto-creation\u002Fbasics\u002F12-composition-basics","构图基础","2025-03-10",{"path":561,"title":562,"date":580,"pinned":16},{"path":553,"title":554,"date":583,"pinned":16}]