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如何绘制斑驳的光影

How to Paint Dappled Light

Dappled light is that magical effect
斑驳的光是一种神奇的特效
where circles or ellipses of light appear under a leafy tree.
即在枝叶繁茂的树下会呈现圆形或椭圆形的光影
Hi my name is James Gurney.
嗨 我叫James Gurney
I want to show you how to paint dappled light,
我想为你们展示如何画出斑驳的光影
and I’ll use as a test case this gouache painting
我将用这幅水粉画作为一个测试案例
of an old stone building lit by dappled light.
画一个被斑驳的光照亮的古老石头建筑
We’ll also look at the science behind dappled light:
我们还会研究光斑背后的科学:
how it forms, and some examples of how it looks on a real cube,
它的形成 以及它在真实立方体上呈现的几个例子
and then we’re going to look at some examples of art history
然后我们会了解一些艺术史上的案例
but I want to take you through this whole process
但是我想带你们了解这整个过程
so that you can paint dappled light effectively
以便你们能够顺利画出斑驳的光
Curnfy工作室 如何绘制斑驳光影
we’re in New Paltz, New York at the Hasbrouck house.
我们在纽约新帕尔茨的Hasbrouck house
This is a 1721 example of dutch colonial architecture.
它是1721年荷兰殖民时期建筑的典范
I’m setting up my homemade sketch easel on a camera tripod
我现在把自制的素描架放在相机的三角架上
and drawing in the basic framework of the scene
用水溶性彩色铅笔画出场景的基本框架
using water soluble colored pencils just to work out the basic placement of elements
以便确定各个元素的基本位置
look at that tree in the upper left casting the shadow on the building
看看左上角那棵树在房子上投射的阴影
and those weeds and light in the left foreground
以及左前景的那些杂草和光线
Three colors: Azo yellow, Terra rosa which is an iron red
三种颜色:偶氮黄 土红(也就是铁红)
and Cerulean blue deep plus white
以及深蓝加白混合成的天蓝色
-Watercolor and gouache -That’s amazing
-水彩画和水粉画 -看起来太棒了
-I hope you guys have a great day -thank you, you too
-awesome productively great day, thank you
-祝你们今天过得愉快 -谢谢 你也是
-希望有充实高效的一天 谢谢
people speed by us in their cars and on foot and on bicycles,
人们开车 步行或骑车从我们身边疾驰而过
and we shift to a slower mode of time.
而我们则转换到一种更缓慢的时间模式
I start by painting in some of the yellows and yellow greens
一开始 我在左前景杂草丛生的地方
in that left foreground where all the weeds were
涂了些黄色和黄绿色
There’s some reds in there too, in the base.
还在底部涂了些红色
and what I can do is to paint around those
我能做的是之后在那些
very hot light colors with darker colors later
浅暖色周围涂上较深的颜色
but it’s nice to get them in early
但早点把它们涂好也不错
notice I’m not cleaning my brush in between I’m just
注意 我刚才从一个颜色切换到另一个颜色时
diving in from one color to another
没有清洗画刷
it’s okay if the colors blend a bit
颜色混合一点也没有关系
and if i need a really pure color i can wash out my brush
如果我真的需要一种纯色 再洗画刷
I do have more water than just what’s in that little cup in the lower left
除了左下角小杯子里的水 我还有一些
now I can make some of the deeper blues and greens
现在我可以调出由左上角的树投射出的
that are cast by the tree in the upper left
更深的蓝色和绿色了
Speeding things up a little bit.
快进一下
I have the shadows in the left,
左边还有阴影
some of the darks in the window,
窗户上有一些黑色部分要画
and now I can start indicating the cast shadow
现在我可以开始用一些斜线
with some diagonals as it travels down the building
来表现这些投射在房子上的阴影了
now trying to indicate some of the textures of the weeds in the left
现在试着表现左边杂草的一些纹理
using a small long flat brush and just touching with the edge of it
我们只需要用一个小的平刷的边缘来点缀即可
now looking at the actual scene
现在看一下实际场景
the cast shadow goes across a very complicated area
投射的阴影穿过窗户上
of thin mullions in the window
复杂的窗棂网格区域
I need to paint the mullions but have them go in and out of light
我要画出这些窗棂 但是得体现出阳光透射过它们
let’s think for a second about what causes these spots of light
让我们来想一想什么引发了这些光点
if you look at a diagram of the tree,
如果你去观察这颗树的简图
the high leafy canopy of the tree has spaces between the leaves
你会发现树冠处叶子间的空隙
which project like a pinhole camera
就像针孔相机一样
these circles of light onto the ground
把这些光圈投射到地面上
now if the angle of a wall is oblique to the angle of the rays, you’ll get ellipses
如果墙的角度与光线的角度倾斜 你会得到椭圆
which is a cross section of that cone of light coming from the top of the tree
这是一个从树顶投射出的光锥的横截面
and I can actually show how that ellipse will change
我可以实际展示一下椭圆是如何变化的
If I push this cube over a little bit,
如果我们把这个立方体推过去一点
it’ll change those ellipses to a different shape
就会略微改变这些椭圆的形状
but one thing that always is true is that
但不变的是
the angle of the long axis of the ellipse points back toward the sun
椭圆长轴的角度始终指向太阳
now really what you’re looking at are cast shadows of trees spread across these surfaces
现在你实际上看到的是 树木投射在这些表面上的阴影
and so as the leaves move these bits of light will change
随着树叶的移动 这些光点会发生变化
and if there are leaves closer to the surface
而且如果有树叶靠近表面
they’ll be projected with sharper edges
他们会以更锐利的边缘投射
artists all through history have used this effect:
历史上的艺术家们都使用过这种特效:
Albert Bierstadt and Henryk Siemiradsky,
阿尔伯特·比尔施塔特和亨利克·西米拉斯基
who’s a Polish artist and Russian artists
一位是波兰艺术家 另一位是俄罗斯艺术家
have done a lot of this you’ll find it all through history
纵观历史 你会发现这种特效被应用广泛
but let’s go back to the painting
但是现在让我们回到画中
and I see if I can take you through the final stages of the process
看看我能不能带你们完成最后的步骤
now I’ve rigged up a black T-shirt
现在我换上了一件黑色衬衫
now I’ve rigged up a black T-shirt to cut the glare from the brightly lit road
来减少明亮道路上的炫光
and I’m using a Waterman fountain pen with brown ink
我用一支棕色墨水的华特曼钢笔
to put in some of the accents of the area underneath the door
来加重门下面这片区域
and some of the window details
还有一些窗户上的细节
and some of the dark areas below the stones of this old house
以及这所老房子石头下面的一些深色区域
the circles of light touching the ground are actually
地面上的光圈其实是
projections of the circular shape of the sun itself
太阳自身形状的投影
on rare days when the sun is partially eclipsed by the moon
偶尔当太阳被月亮挡住一部分的时候
each of these circles will seem to have a piece missing
每个光圈就会看起来不完整
or bite out of one side
或是一边被咬了一口似的
now there’s a low curb
在右下角草坪的边缘
at the edge of that lawn on the lower right
还有一处马路的边石
and I’m going to put that in with a brush
现在我准备用画笔把它画出来
need a steady hand for this
手需要稳一些
so I show some of the dirt spilling over into the road
我现在画的是马路上溢出的一些灰尘
and here’s the final painting
那么现在整幅画就完成了
if you’re painting with opaque paints at a larger scale
如果你是大比例画一些抽象的物体
there’s a really cool technique you can use
你可以使用一种特别酷的技巧
called in-brush gradients
叫做笔刷渐变
where you’re actually painting a soft edge around each of the dappled light ellipses
实际上 你是在画每个斑驳光影的柔软边缘
using a special flat brush
在特制的扁平刷子的两端
that’s loaded with two colors of paint on each side
装填两种颜料
you turn the brush around the ellipse
然后用刷子绕着椭圆光晕旋转
this is especially convincing if you carry it across another color
特别是当你用刷子刷上另一种颜色
and have that same effect working across two different color areas
在两种颜色的交汇处使用同种技巧时效果更好
I talk about this effect of gradients and a lot of other aspects of gradients
Gumroad网站有我的新视频 里面还有许多关于
in my new video on Gumroad
渐变效果其他方面的介绍
there’s a link in the description below
在介绍的下方有一个链接
where you can check out a trailer on that video
在那里你可以查看该视频的预告片
that will take your paintings to the next level
这些视频可以提高你的绘画技巧
so thanks and have fun with dappled light
非常感谢 希望你在这期斑驳的光影学有收获
check out my website with signed books and other goodies on the left
查看网站上我的签名书及左边的其他信息
the upper right subscribe if you haven’t yet
如果你还没订阅 请点击右上角
on the lower left is a related video with similar content
左下角是其他相关内容的视频推送
and in the lower right is a playlist with loads of good stuff to binge on
右下角是其他海量学习内容的播放列表 可以尽情享用

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视频概述

James Gurney为我们带来了如何绘制斑驳的光影教程,他用一幅水彩画生动形象的画出了纽约新帕尔茨的Hasbrouck house,其间通过观察、分解和艺术史中的案例为我们呈现了他的技巧和见解。

听录译者

收集自网络

翻译译者

紫雨

审核员

审核员AF

视频来源

https://www.youtube.com/watch?v=eoPTQhMYeG0

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