{"slug":"luminosity-masks-basics","title":"现代摄影后期重要技术：亮度蒙版基础入门教程","author":"Thomas看看世界","date":"2020-02-02","wechat":"https://mp.weixin.qq.com/s?__biz=MzI4NDA5MzE5NQ==&mid=2247490102&idx=1&sn=f449e4ff5685aae50d9416f4b7aa9d7c&chksm=eb81e452dcf66d443ffea6dc9294f28788eb214efdd304879ace751057901528f95701ee613b&scene=21#wechat_redirect","blocks":[{"t":"h","x":"Thomas看看世界","xe":"Thomas Chu Photo"},{"t":"p","x":"亮度蒙版（英文名：Luminosity Masks，国内也有译作明度蒙版、灰度蒙版），是一种基于亮度的局部选择工具。","b":false,"xe":"Luminosity masks are a luminance-based local selection tool."},{"t":"p","x":"如果说安塞尔亚当斯的“分区曝光法”，为摄影师的前期拍摄提供了指导。那么亮度蒙版，则为摄影师，特别是风景摄影师，提供了一种重要的后期局部调整工具。","b":false,"xe":"If Ansel Adams' Zone System guided photographers at capture time, then luminosity masks give photographers — landscape shooters especially — an essential tool for local adjustments in post."},{"t":"p","x":"今天的教程中，托马斯就会和大家分享亮度蒙版的入门知识。","b":false,"xe":"In today's tutorial, Thomas shares the fundamentals of luminosity masks."},{"t":"h","x":"视频教程","xe":"Video Tutorial"},{"t":"bili","bv":"BV1o7411W7zg","bpic":"bili-1","bt":"现代摄影后期最重要技术之一：亮度蒙版入门教程"},{"t":"p","x":"这一篇是上面视频的完整图文整理，亮度蒙版系列的第 1 期、也是整条学习路径的起点。23 分钟的入门课回答四个问题：亮度蒙版在 PS 里到底处在什么位置、它比套索和快速选择强在哪、怎么用动作或插件最快生成、以及一个马上能上手的对比度案例。下面按视频顺序整理，配关键帧截图——先把框架搭起来，再看视频补细节。","xe":"This is the fully illustrated companion to the video above — episode 1 of the luminosity mask series and the starting point of the whole learning path. In 23 minutes the intro course answers four questions: where luminosity masks sit inside Photoshop, what they beat the lasso and Quick Selection at, how to generate them fastest with actions or plugins, and one hands-on contrast case. Everything is arranged in the video's order with keyframe screenshots — build the framework here, then dive into the video for detail.","b":false},{"t":"p","x":"先记住这张原理卡：亮度蒙版的本质是一条流水线——（亮度）通道变成选区、选区变成（亮度）蒙版；有了蒙版，合成、局部调色、Nik 滤镜局部应用等一切局部效果都有了抓手。视频里反复回到这张卡，本文也以它为主线。","xe":"Keep this principle card in mind: a luminosity mask is a pipeline — a (luminosity) channel becomes a selection, the selection becomes a (luminosity) mask; with the mask, every local effect — blending, selective color, local Nik filters — has a handle. The video returns to this card again and again, and so does this article.","b":false},{"t":"img","f":"v01","w":852,"h":480},{"t":"h","x":"01 先破除神秘：PS 只有选择和特效两步","xe":"01 First, Demystify: Photoshop Is Select, Then Apply"},{"t":"p","x":"理解亮度蒙版，先要把那层「高级、神秘、复杂」的外表撕掉。Thomas 的框架是：PS 在摄影修图中的所有功能，都可以总结为两大核心——局部选择，以及特效调整（视频 0:31 处）。左边工具栏里的矩形、普通、多边形磁性套索，钢笔，快速选择，乃至通道和亮度蒙版，本质上都在干第一件事：对画面做精细的局部选择。","xe":"To understand luminosity masks, first strip off their 'advanced, mysterious, complicated' costume. Thomas's frame: every Photoshop feature in photo editing boils down to two cores — local selection, and applying effects (at 0:31 in the video). The rectangular, lasso and magnetic-lasso tools, the Pen, Quick Selection, and even channels and luminosity masks all do the first job: making a fine-grained local selection.","b":false},{"t":"img","f":"v02","w":852,"h":480},{"t":"p","x":"选出来之后，第二步就是往上应用各种特效：Camera Raw 滤镜、Nik Collection、局部模糊、滤镜库……视频里的示例是用快速选择工具选出天空，然后建一个黑白调整图层把天空变黑白（视频 1:05 处）。甚至连色相饱和度这种「全局工具」也分两步：先选中画面中的蓝色，再对蓝色降饱和、调色相、改明度（视频 1:50 处）。","xe":"Once selected, step two is applying effects on top: Camera Raw filters, Nik Collection, local blur, the Filter Gallery... In the video's demo, Quick Selection grabs the sky, then a Black & White adjustment turns it monochrome (at 1:05 in the video). Even Hue/Saturation, which looks like a global tool, is two steps: first select the blues, then shift their hue, saturation or lightness (at 1:50 in the video).","b":false},{"t":"p","x":"所以亮度蒙版并不神秘：它和套索、快速选择、选择并遮住一样，就是 PS 的一种局部选择工具，只不过底层基于通道，属于进阶、有独特优势的那一类（视频 2:27 处）。它的建立路径就是原理卡那三步——生成各种亮度通道，把通道转换成选区，再由选区生成蒙版，这就是亮度蒙版。","xe":"So there is nothing mystical here: like the lasso, Quick Selection and Select and Mask, a luminosity mask is simply one of Photoshop's local selection tools — just channel-based under the hood, an advanced variant with unique strengths (at 2:27 in the video). Its build path is exactly the card's three steps: generate luminosity channels, turn channels into selections, turn selections into masks — and that mask is the luminosity mask.","b":false},{"t":"h","x":"02 三大优势：亮度区间、复杂抠图、自然过渡","xe":"02 Three Strengths: Tonal Range, Complex Cutouts, Natural Transitions"},{"t":"p","x":"为什么不用套索、钢笔、快速选择就够了，还要学亮度蒙版？Thomas 给出三个理由（视频 5:12 处）。第一，精确选择亮度区间。比如手动曝光合成时要选出画面中过曝的最亮区域——这类「以亮度定义」的目标，套索和可选颜色都选不精确、过渡也不好，而亮度蒙版只选出最亮的那部分，并且周边从亮到暗根据原图自然过渡（视频 5:41 处）。反过来选最暗的部分做局部处理，同理。","xe":"Why learn luminosity masks when the lasso, Pen and Quick Selection exist? Thomas gives three reasons (at 5:12 in the video). First, precise selection of a tonal range. In a manual exposure blend you need the brightest, clipped areas — targets defined by brightness itself, which the lasso or Select Color can neither isolate precisely nor transition smoothly. A luminosity mask picks exactly the brightest parts, feathering from bright to dark along the image's own light (at 5:41 in the video). Selecting the darkest parts for local work works the same way.","b":false},{"t":"img","f":"v03","w":852,"h":480},{"t":"p","x":"第二，完成复杂边缘和半透明的抠图。云层边缘复杂又半透明，是套索的噩梦；视频里的案例是悬崖前那棵树——树干下半部分还好，上半部分每根枯枝又分出更多小枯枝，用套索慢慢抠没有十几二十分钟下不来（视频 7:13 处）。用亮度蒙版则先选画面的暗部阴影区域：枯枝在原图里又黑又暗，在暗部蒙版里就成了白色被选中，周边较亮的岩壁变成黑色被排除。","xe":"Second, complex-edge and translucent cutouts. Clouds — ragged and translucent — are a lasso nightmare; the video's case is the tree on the cliff: the trunk's lower half is manageable, but higher up every bare branch splits into more, and hand-cutting would cost twenty minutes at least (at 7:13 in the video). With a luminosity mask, select the dark shadow region first: the near-black branches turn white and selected in the shadow mask, while the brighter cliff walls drop to black and are excluded.","b":false},{"t":"img","f":"v05","w":852,"h":480},{"t":"img","f":"v06","w":852,"h":480},{"t":"p","x":"之后对这个蒙版做进一步加工——色阶、曲线增强对比度，画笔把周边涂黑——就能精确选中整丛枯枝，再去压暗、加饱和度、加生机都随心所欲（视频 8:25 处）。关键在最后一句话：只要目标与周边在亮度上有差异，无论边缘多复杂、是否半透明，亮度蒙版都能做精细的局部选择（视频 8:57 处）。","xe":"Refine that mask — Levels or Curves to boost contrast, a black brush to clean the edges — and the whole branch cluster is precisely selected, ready to darken, saturate or enliven at will (at 8:25 in the video). The takeaway: as long as the target differs from its surroundings in brightness, no edge is too complex or too translucent for a luminosity mask (at 8:57 in the video).","b":false},{"t":"p","x":"第三，过渡非常自然——亮度蒙版自带羽化。视频的三版对比非常直观：给山湖倒影照片加一根红色曲线、营造清晨天光的感觉。第一版用快速选择工具选天空，结果天空染得通红、地景一点红色都没有，天空和地面明显两层，特别假（视频 9:48 处）；第二版人工做一个羽化渐变蒙版，好了一些，但地景仍然完全不受影响，还是不自然（视频 10:11 处）。","xe":"Third, transitions are natural — luminosity masks come feathered. The video's three-way comparison makes it vivid: a red Curves layer adds morning-glow to the mountain-lake photo. Version one, sky selected with Quick Selection: the sky burns red while the land takes none, two obvious layers, utterly fake (at 9:48 in the video); version two, a hand-made feathered gradient mask: better, but the land is still untouched — still unnatural (at 10:11 in the video).","b":false},{"t":"img","f":"v07","w":852,"h":480},{"t":"p","x":"第三版用亮一亮度蒙版：天空本来就是画面中最亮的部分，在蒙版里呈亮灰、被大量选中；雪山积雪也亮、还反射着天光，自然被选入一部分；岩石反光弱、原来就暗，几乎不受红光影响；地面水面的反光比天光更弱更暗，蒙版里更深，受红光影响也最小（视频 10:42 处）。红色曲线可以拉得很强——因为蒙版只让天空部分全效、其他区域按亮度递减——最终天光效果过渡自然：该反光的雪、被反光照亮的水面自然而然带上了红光（视频 12:06 处）。还可以用画笔把冰川等不需要红色的地方稍微涂掉。这三大优势的总结就印在视频的要点页上（视频 10:42 处）。","xe":"Version three uses a Lights 1 mask: the sky, the brightest thing in frame, reads light gray and is strongly selected; sunlit snowfields, also bright and bouncing skylight, come partially in; the dark, low-reflectance rocks barely catch the red; and the water's reflection, dimmer than the sky itself, sits deeper in the mask and takes the least red of all (at 10:42 in the video). The red curve can be pulled hard — the mask gives the sky full effect and tapers everywhere else by brightness — and the glow lands naturally: reflective snow and lit water pick up the warmth on their own (at 12:06 in the video). A brush can still mask off the glacier where red isn't wanted. The three strengths are summed up on the video's outline slide (at 10:42 in the video).","b":false},{"t":"img","f":"v04","w":852,"h":480},{"t":"img","f":"v08","w":852,"h":480},{"t":"h","x":"03 生成方式：免费动作与收费插件","xe":"03 Generating Masks: Free Action or Paid Panel"},{"t":"p","x":"手动生成亮度蒙版实际工作中很少用（原理留到后面的课程），入门先掌握两种快速方式。第一种是 PS 动作：Thomas 自制的动作可以免费下载，在公众号文章或微博、B 站评论区找到链接，下载得到「亮度蒙版 Thomas ATN」文件，装好 PS 后鼠标左键双击，它就自动进入动作面板；如果面板不在，从「窗口-动作」勾选调出（视频 14:33 处）。动作分「生成」和「删除」两个：在背景图层或任何有像素的图层上运行生成，图层面板毫无变化，变化全在通道面板——RGB 之外多出 Light 1 到 Light 7、Dark 1 到 Dark 7、Mid 1 到 Mid 7 一整套亮度通道。","xe":"Manual generation is rare in real work (its principles come in a later lesson); start with the two fast routes. First, the Photoshop action: Thomas's homemade action is a free download — find the link in the WeChat article or the Weibo/Bilibili comments, get the 'Luminosity Masks Thomas .ATN' file, and with Photoshop installed a double-click loads it into the Actions panel (summon it via Window-Actions if hidden) (at 14:33 in the video). The action set has Generate and Delete: run Generate on the background or any pixel layer and nothing seems to happen in the Layers panel — the change is all in the Channels panel, where Lights 1-7, Darks 1-7 and Mids 1-7 appear alongside RGB.","b":false},{"t":"img","f":"v09","w":852,"h":480},{"t":"img","f":"v10","w":852,"h":480},{"t":"p","x":"通道的规律要心里有数：亮 1 是画面的亮部，亮 2 在亮 1 的基础上只选更亮的区域，一路递进到亮 6、亮 7 就只剩最亮的一小块——越往后越亮、范围越小；暗 1 到暗 7 从浅暗一路到极暗；Mid 1 到 Mid 7 则覆盖中间调的各个宽度（视频 15:42 处）。第二种方式是插件：TK Actions 的 Rapid Mask 面板像直方图一样从左到右标好范围，点数字直接生成并预览对应蒙版——要中间调点中间调 3，要最亮的部分一眼就该选亮 6，要更暗就先暗 1 再暗 3，非常直观（视频 16:33 处）。Raya Pro、半岛雪人等插件是收费版权软件，去官网或百度搜索购买，视频里不做分享。","xe":"Know the channel logic: Lights 1 covers the bright regions, Lights 2 keeps only the brighter parts of that, and by Lights 6-7 a tiny brilliant patch remains — each step brighter and narrower; Darks 1-7 descend from faint shadow to the deepest blacks; Mids 1-7 cover the midtones at increasing widths (at 15:42 in the video). Second route, plugins: the TK Actions Rapid Mask panel lays the ranges out left to right like a histogram — click a number to generate and preview that mask; for midtones click Midtones 3, for the very brightest spots Lights 6 is the obvious pick, and for deeper shadows go Darks 1 then Darks 3 — highly intuitive (at 16:33 in the video). Raya Pro and the Snowman panel are paid, copyrighted software — buy them from their official sites; they are not shared in the video.","b":false},{"t":"img","f":"v11","w":852,"h":480},{"t":"h","x":"04 入门应用：用中间调蒙版加对比度","xe":"04 First Application: Contrast Through a Midtone Mask"},{"t":"p","x":"最简单的应用案例是增加画面对比度。老办法是曲线拉一个 S 型——对比度上去了，饱和度鲜度也跟着涨，但问题立现：高光过曝、原来还有细节的暗部糊成漆黑一团（视频 18:06 处）。这时候问自己：增加对比度，画面里最需要它的是哪个亮度区间？答案是中间调——高光和阴影并不缺对比度（视频 18:42 处）。","xe":"The simplest application is adding contrast. The old way is an S-curve — contrast climbs, saturation and vibrance ride along, but the trouble shows immediately: highlights blow out and shadows that still held detail collapse into a black blob (at 18:06 in the video). Ask instead: which tonal band needs the contrast? The midtones — highlights and shadows don't (at 18:42 in the video).","b":false},{"t":"p","x":"操作路径：翻看动作生成的通道，MID 1 偏灰、MID 2 比较顺眼、MID 3 范围更大，中间调蒙版天然把阴影和高光屏蔽成黑色——石头的阴影、过曝的天空在蒙版里都是黑的（视频 19:02 处）。按住 Ctrl 键点击 MID 2 通道载入选区（或选中通道后点面板底部第一个图标）；新建曲线调整图层时，选区自动转成图层蒙版。如果曲线已经建好，同样 Ctrl+点击通道得到选区，在蒙版上用「编辑-填充」填黑色、再按 Ctrl+I 反相——记住白色才是要调整的区域（视频 19:48 处）。","xe":"The workflow: browse the generated channels — MID 1 runs gray, MID 2 looks right, MID 3 is broader — and note how a midtone mask already blacks out shadows and highlights: the rock shadows and the blown sky both sit dark (at 19:02 in the video). Ctrl-click the MID 2 channel to load it as a selection (or select the channel and click the first icon at the panel's foot); add a Curves adjustment layer and the selection converts into its layer mask automatically. If the curve already exists, Ctrl-click the channel as before, fill the mask with black via Edit-Fill, then invert with Ctrl+I — white is always the region you want to affect (at 19:48 in the video).","b":false},{"t":"img","f":"v12","w":852,"h":480},{"t":"p","x":"效果对比一目了然：同一条对比度曲线，挂上中间调蒙版后只作用于画面中间那部分——中间调色彩更鲜艳、对比更强烈，亮部暗部几乎不受影响；略微受到的那点影响反而让过渡自然，不是生硬的断层（视频 21:00 处）。按住 Alt 键取消蒙版对比：没有亮度蒙版时对比度非常强烈、高光阴影中间调一起过界；换 MID 3 配亮度对比度工具同样成立——有蒙版时柔和舒服，没蒙版时整个画面又黑又亮（视频 21:30 处）。增加中间调对比度效果最明显、饱和度提升最自然，这就是亮度蒙版最简单的入门应用。","xe":"The comparison is instant: the same contrast curve, masked to the midtones, acts only on the middle of the image — midtones grow more vivid and punchy while highlights and shadows barely move, and the little they do move actually smooths the transition instead of cutting it (at 21:00 in the video). Alt-click the mask off to compare: without it the contrast is violent, highlights, shadows and midtones all overshooting; the same trick with MID 3 on a Brightness/Contrast layer holds too — masked it feels soft and comfortable, unmasked the frame goes harshly black and blown (at 21:30 in the video). Midtone contrast shows the biggest gain and the most natural saturation lift — the simplest on-ramp to luminosity masks.","b":false},{"t":"img","f":"v13","w":852,"h":480},{"t":"h","x":"05 入门之后：系列课程的路线图","xe":"05 After the Basics: Where the Series Goes"},{"t":"p","x":"这一期把地基打完：亮度蒙版是基于通道的局部选择工具，三大优势是精确选亮度区间、搞定复杂边缘与半透明抠图、自带自然过渡；动作或插件负责生成，通道-选区-蒙版是它的流水线。后面的课程会讲更进阶的应用——亮度蒙版的局部选择、曝光合成、局部调整等（视频 23:12 处）。建议配合公众号回复「通道」领取的图层、蒙版、通道六篇基础文章一起食用。","xe":"This episode lays the foundation: a luminosity mask is a channel-based local selection tool whose three strengths are precise tonal-range selection, complex-edge and translucent cutouts, and naturally feathered transitions; actions or plugins generate it, and channel-to-selection-to-mask is its pipeline. Later episodes cover the advanced applications — local selection, exposure blending, local adjustments (at 23:12 in the video). Pair it with the six foundation articles on layers, masks and channels — reply 'channels' on the WeChat account to get them.","b":false},{"t":"quote","x":"1. PS 修图只有两大核心：局部选择 + 特效调整；亮度蒙版不是什么神秘技术，只是基于通道的进阶局部选择工具，流水线是「通道→选区→蒙版」；2. 三大优势：精确选择亮度区间、完成复杂边缘和半透明抠图、自带羽化的自然过渡——只要目标与周边存在亮度差异就能精细选中；3. 快速生成两件套：Thomas 免费动作双击安装，运行后通道多出亮/暗/中间调各 7 档（越靠后越窄）；TK Rapid Mask 面板像直方图点数字即得蒙版；4. 入门案例：加对比度别直接拉 S 曲线（高光过曝暗部死黑），挂 MID2 中间调蒙版，让对比只落在最需要的中间调上。","xe":"1. Photo editing in Photoshop is two cores: local selection plus applied effects; luminosity masks are no mystery — just an advanced, channel-based selection tool running the pipeline channel-to-selection-to-mask; 2. Three strengths: precise tonal-range selection, complex-edge and translucent cutouts, and naturally feathered transitions — anything that differs from its surroundings in brightness can be isolated cleanly; 3. Two fast generators: Thomas's free action (double-click to install; running it adds Lights/Darks/Mids 1-7 to the channels, narrower as numbers rise) and the TK Rapid Mask panel, histogram-style, one click per mask; 4. Starter case: don't yank an S-curve for contrast (blown highlights, dead shadows) — hang it on a MID 2 midtone mask so contrast lands only where it's needed."},{"t":"p","x":"亮度蒙版自制动作下载：","b":false,"xe":"Download the custom luminosity mask action:"},{"t":"p","x":"链接: https://pan.baidu.com/s/1pLUY8IC4pEOuJ3DWuTb4hA","b":false,"xe":"Link: https://pan.baidu.com/s/1pLUY8IC4pEOuJ3DWuTb4hA"},{"t":"p","x":"提取码: kci3","b":false,"xe":"Extraction code: kci3"},{"t":"h","x":"PPT","xe":"PPT"},{"t":"img","f":"img-02","w":1080,"h":608},{"t":"img","f":"img-03","w":1080,"h":608},{"t":"img","f":"img-04","w":1080,"h":608},{"t":"img","f":"img-05","w":1080,"h":608},{"t":"img","f":"img-06","w":1080,"h":608},{"t":"img","f":"img-07","w":1080,"h":608}],"titleEn":"Luminosity Mask Basics: An Essential Modern Post-Processing Technique"}