{"slug":"city-night-time-blending","title":"城市夜景还有这种拍法？既有晚霞又有灯光的爬楼大片，原来这么拍！","author":"Thomas看看世界","date":"2019-12-08","wechat":"https://mp.weixin.qq.com/s?__biz=MzI4NDA5MzE5NQ==&mid=2247489861&idx=1&sn=164dae36487f68a92cb3f349eb8d8dc9&chksm=eb81e721dcf66e37207cf3678d1c545af060d08a91b62057153f3fccbce2a5d6629a3f4be48b&scene=21#wechat_redirect","blocks":[{"t":"h","x":"Thomas看看世界","xe":"Thomas Chu Photo"},{"t":"p","x":"城市夜景是大家随时都可以拍摄的一个题材。","b":false,"xe":"City nightscapes are a subject everyone can shoot anytime."},{"t":"p","x":"不过我们在拍摄的时候，常常遇到一个难题：天空层次丰富的时候（比如晚霞、蓝调时刻），城市的灯光还没有亮起来。","b":false,"xe":"But we often hit a dilemma: when the sky is rich in detail (sunset glow, blue hour), the city lights haven't come on yet."},{"t":"p","x":"等城市灯光全部亮起来了，天空又变成黑乎乎一片，缺少细节。","b":false,"xe":"By the time all the lights are on, the sky has gone pitch black and lost its detail."},{"t":"img","f":"img-02","w":1000,"h":725},{"t":"p","x":"很多朋友好奇，像上面一张照片，既有壮观晚霞，又有城市灯光的照片，是如何拍出来的？","b":false,"xe":"Many friends ask how a photo like the one above — with both a dramatic sunset glow and full city lights — is made."},{"t":"p","x":"今天托马斯就会为大家揭开背后的秘密，用视频展示时间合成技术在夜景拍摄中的应用。","b":false,"xe":"Today Thomas reveals the secret, showing time blending applied to night photography in a video."},{"t":"img","f":"img-03","w":1000,"h":665},{"t":"h","x":"视频教程","xe":"Video Tutorial"},{"t":"bili","bv":"BV1KJ411v777","bpic":"bili-1","bt":"城市夜景还有这种拍法？既有晚霞又有灯光的爬楼大片，原来这么拍！"},{"t":"p","x":"这一篇是上面视频的完整图文整理。城市夜景人人都能拍，但有个经典矛盾：天空层次最好的晚霞和蓝调时刻，城市灯光还没亮；等灯全亮了，天空又黑成一片。Thomas 在重庆实测了「时间合成」技术——同一机位拍两张，把蓝调的天空和深夜的灯光合进同一张照片，视频里从装备讲到 PS 全流程，本文配关键帧截图逐一拆解。","xe":"This is the fully illustrated companion to the video above. City night shots face a classic conflict: when the sky has its best color — sunset glow and the blue hour — the city lights are still off; once the lights come on, the sky has turned black. Thomas demonstrates the 'time blend' technique from Chongqing: two frames from the same vantage, merging a blue-hour sky with late-night lights. The video covers gear through the full Photoshop workflow; this article breaks it down with keyframe screenshots."},{"t":"p","x":"先看总览。蓝调时刻是太阳落山约 30 分钟后、天空呈现蓝色的时段——这是全片的核心概念，也是城市夜景的最佳拍摄窗口，下文围绕它展开。","xe":"Start with the overview: the blue hour — roughly 30 minutes after sunset, when the sky turns blue — is the video's core concept and the prime window for city nightscapes. Everything below builds on it."},{"t":"img","f":"v01","w":852,"h":480},{"t":"h","x":"01 城市夜景的最佳时机：蓝调时刻","xe":"01 The Prime Window: The Blue Hour"},{"t":"p","x":"城市通勤拍摄，Thomas 的装备很轻量：索尼 A7R3 加一支 24-105mm（焦段灵活），广角和长焦备用；海大的偏振镜和减光镜——前景有水时用减光镜拍慢门虚化水面；三脚架和云台保证相机稳定；装东西的是 PGYTECH 新出的 OneMo 背包，颜值与装载力都在线（视频 0:16 处）。","xe":"For city outings Thomas travels light: a Sony A7R3 with a 24-105mm (a flexible range), wide and telephoto primes as backup, Haida polarizer and ND filters — the ND turns water silky on long exposures — a tripod and head for stability, all carried in PGYTECH's new OneMo backpack, easy on the eyes and capacious (at 0:16 in the video)."},{"t":"img","f":"v04","w":852,"h":480},{"t":"p","x":"蓝调时刻一般在日落后半小时：太阳的红色黄色已经褪去，天空转为蓝色，但还没黑透——仍有天光垫底，地面细节清晰可见，天空颜色也干净，是拍摄城市夜景的最佳时机。夏天晚上七八点灯光已经亮起，两者刚好相遇；可冬天的重庆五点半就日落，六点进入蓝调，而远处千厮门大桥的灯光要七点半八点才亮——矛盾由此而来（视频 1:07 处）。","xe":"The blue hour typically arrives half an hour after sunset: the reds and yellows have faded into blue, yet the sky is not black — faint skylight keeps ground detail visible and the color clean. It is the best window for city nightscapes. In summer, lights come on at seven or eight while the sky is still blue — the two meet naturally. But in winter Chongqing the sun sets at 5:30 and the blue hour starts at six, while the Qiansimen Bridge only lights up around 7:30-8:00 — hence the conflict (at 1:07 in the video)."},{"t":"img","f":"v02","w":852,"h":480},{"t":"img","f":"v03","w":852,"h":480},{"t":"h","x":"02 时间合成：蓝调拍地景，天黑拍灯光","xe":"02 The Time Blend: Ground at Blue Hour, Lights at Night"},{"t":"p","x":"解决办法就是时间合成：蓝调时刻先拍一张，记录地景和环境；等天黑灯全亮再拍一张，记录所有灯光；后期把两张合并，就得到既有蓝调天空又有璀璨灯光的照片。之所以叫「时间合成」，是因为机位、三脚架、镜头全部不动，两张照片构图一模一样，唯一改变的只有拍摄时间（视频 2:15 处）。","xe":"The fix is the time blend: shoot one frame at the blue hour for the landscape and atmosphere, another after dark when every light is on, then merge them in post — a photo with both a blue sky and brilliant lights. It is called a time blend because the tripod, vantage and lens never move: the two frames share an identical composition, and only the shooting time changes (at 2:15 in the video)."},{"t":"img","f":"v05","w":852,"h":480},{"t":"p","x":"你在网上看到的那些既有壮观晚霞、又有城市灯光的图，大部分也是这么拍出来的——视频里用伊斯坦布尔蓝色清真寺做了示范：晚霞底图加亮灯图，等号右边就是最终效果。这就是城市夜景拍摄的公开秘密：如何让灯光显得更多（视频 2:41 处）。","xe":"Those spectacular images combining sunset glow with city lights are mostly made the same way — the video demos it with Istanbul's Blue Mosque: sunset base frame plus a lights frame, and the result after the equals sign. It is the open secret of city night photography: how to get more lights into your picture (at 2:41 in the video)."},{"t":"img","f":"v12","w":852,"h":480},{"t":"p","x":"当晚实际拍摄了一组素材，从中选两张：一张蓝调、一张亮灯后。Thomas 自嘲蓝调那张拍得稍晚了些，天已经比较黑，其实应该更早动手；而亮灯那张虽然地面细节尽失、天空毫无层次，但所有灯光都亮了——这正是它唯一的、也是关键的价值（视频 3:20 处）。","xe":"That night produced a full set of frames, from which two were picked: one blue hour, one after the lights came on. Thomas admits the blue-hour frame was shot a bit late — the sky had darkened more than intended; and while the night frame loses ground detail and has no sky gradation at all, every light is on — which is its one, decisive value (at 3:20 in the video)."},{"t":"img","f":"v06","w":852,"h":480},{"t":"h","x":"03 对齐与变亮：两步完成合成","xe":"03 Align and Lighten: The Blend in Two Steps"},{"t":"p","x":"PS 流程第一步：把两张照片导入同一个文件（选中图层复制到另一个目标文档即可）。这类合成图 Thomas 一律先合成、再统一调色和调曝光，以保留最大画质。三脚架虽然没动，按快门时相机仍会有几个像素的位移，所以先执行「编辑 > 自动对齐图层」；万一失效，把上层混合模式临时改成「差值」手动微移——画面里黑色最多、白色最少的时刻，就是对得最齐的时刻（视频 4:30 处）。","xe":"Step one in Photoshop: bring both frames into one document (copy the layer across to the other open document). For blends Thomas always merges first, then grades and adjusts exposure on the merged result to preserve maximum quality. Although the tripod never moved, pressing the shutter shifts the camera by a few pixels, so run Edit > Auto-Align Layers first; if it fails, flip the top layer's blend mode to Difference and nudge manually — alignment is perfect when the preview is at its blackest (at 4:30 in the video)."},{"t":"img","f":"v07","w":852,"h":480},{"t":"p","x":"第二步是整个技巧的灵魂：把上层（亮灯照片）的混合模式从「正常」改成「变亮」。变亮模式会逐像素取两层中更亮的那个——地面本来亮的区域不变，而灯光比蓝调底图亮的地方就自动透了出来，两层瞬间融合，一张既有蓝调天空又有满城灯光的照片成型（视频 6:44 处）。","xe":"Step two is the soul of the trick: switch the top layer (the lit frame) from Normal to Lighten. Lighten compares pixels and keeps the brighter of the two — the already-bright ground stays untouched while every light brighter than the blue-hour base shines through, fusing the layers instantly into one image with a blue sky and a glowing city (at 6:44 in the video)."},{"t":"img","f":"v09","w":852,"h":480},{"t":"h","x":"04 曲线压天空：免抠图隐藏脏色","xe":"04 A Curve to Hide the Sky — No Masking Needed"},{"t":"p","x":"问题来了：天空「各取更亮」后变得五颜六色、很浅很脏——左上角取了下层，中间黄色区域又取了上层。逐像素抠天空太麻烦，Thomas 的解法依然利用变亮模式的特点：让上图的天空比下图更暗即可。建一个曲线调整图层，右键「创建剪贴蒙版」让它只作用于上层，再用抓手工具把天空亮度整体往下压——上层天空立刻全部消失，只留下层的干净蓝调（视频 7:38 处）。","xe":"A problem appears: with Lighten picking whichever sky is brighter, the result becomes a shallow, dirty patchwork — the upper left takes the lower sky, a yellow patch takes the upper one. Pixel-level masking is tedious; Thomas instead exploits Lighten again: simply make the upper sky darker than the lower. Add a Curves adjustment layer, right-click Create Clipping Mask so it affects only the top layer, then drag the sky's brightness down with the on-image tool — the upper sky vanishes entirely, leaving the clean blue hour beneath (at 7:38 in the video)."},{"t":"img","f":"v08","w":852,"h":480},{"t":"p","x":"代价是灯光也跟着变暗变脏了。所以再把上层图里的灯光选出来，在曲线上重新提亮——最终上层的天空完全隐藏，而灯光不受任何影响。对比一下有无曲线图层的效果：不沿着建筑轮廓慢慢抠图，就完成了天空的替换，这正是变亮混合模式的神奇之处（视频 9:24 处）。","xe":"The cost: the lights darken and dull along with the sky. So select the lights on the upper layer and lift them back on the curve — the upper sky stays fully hidden while the lights pass through unchanged. Toggle the curve layer on and off to compare: the sky is swapped without ever tracing building outlines, which is exactly the magic of the Lighten blend (at 9:24 in the video)."},{"t":"h","x":"05 蒙版修饰：灯光要哪有哪","xe":"05 Mask Refinement: Lights Wherever You Want Them"},{"t":"p","x":"给上层加一个图层蒙版，用不透明度 100% 的黑色画笔，可以把不想要的灯光逐一抹掉：边角突然亮起的路灯、被照亮的树枝，都会干扰视线；水面上乱七八糟的灯光反光只留一点点；两个行人因两次曝光不同形成的虚影也擦掉；甚至建筑上「茅台」「欢迎重庆」的广告字样，黑色画笔在蒙版上一刷就消失了——刷边缘时要小心，别把下面的灯光也刷没了。这就是时间合成的美妙之处：灯光你想要哪有哪，想让它没有就没有（视频 10:21 处）。","xe":"Add a layer mask to the top layer and paint with a 100%-opacity black brush to remove unwanted lights one by one: the street lamp that suddenly glares at the frame's edge, lit-up branches that distract, the messy light reflections on the water — keep only a hint — the ghosted double image of two walkers caught differently in the two exposures, even the 'Moutai' and 'Welcome to Chongqing' signs on a tower, wiped with one brushstroke — carefully near edges, so you don't erase the lights beneath. That is the beauty of the time blend: lights appear exactly where you want them, and vanish where you don't (at 10:21 in the video)."},{"t":"img","f":"v10","w":852,"h":480},{"t":"img","f":"v11","w":852,"h":480},{"t":"p","x":"前后对比一目了然：没有合成灯光时，蓝调时刻的城市黑漆漆一片；融合进来之后，华灯初上的感觉就出来了。时间合成还支持两张以上：再拍一张 20 秒长曝光的车轨，对齐后同样改「变亮」，用蒙版把车轨刷进来，画面立刻丰富一个层次。全部合成完盖印图层，再统一调色。本期两张原片分享在评论区，欢迎调色后投稿微博或图虫 @Thomas看看世界（视频 12:35 处）。","xe":"The before-and-after says it all: without the blended lights the blue-hour city is pitch dark; with them, the 'lights coming on' feeling emerges. The technique scales beyond two frames: shoot a third with a 20-second exposure for light trails, align, set Lighten, and brush the trails in through a mask for an extra layer of richness. Stamp the result into one layer and grade it as a whole. The two source frames are shared in the comments — try your own grade and post it to Weibo or Tuchong @Thomas看看世界 (at 12:35 in the video)."},{"t":"quote","x":"1. 城市夜景的最佳窗口是蓝调时刻——日落后半小时，天光垫底、地面有细节、天空干净；2. 灯光晚于蓝调时用时间合成：同一机位拍蓝调与亮灯两张，先合成再调色，自动对齐后上层改「变亮」即可融合；3. 天空脏色不用抠图：曲线加剪贴蒙版压暗上层天空，再单独提亮恢复灯光；4. 蒙版加黑色画笔让灯光要哪有哪——删路灯、水面反光、鬼影与广告字样，还可叠加长曝车轨丰富层次。","xe":"1. The prime window is the blue hour — half an hour after sunset, with skylight, ground detail and a clean sky; 2. When lights lag behind, time blend: shoot blue-hour and lit frames from one vantage, merge before grading, auto-align and set the top layer to Lighten; 3. Fix a patchy sky without masking — a clipped Curves layer darkens the upper sky, then the lights are lifted back selectively; 4. A mask and black brush put lights wherever you want — erase stray lamps, water reflections, ghosts and signage, and stack a long-exposure car-trail frame for extra depth."}],"titleEn":"City Nights with Both Sunset Glow and Lights: How Rooftop Shots Are Made"}