100:00:00,900 --> 00:00:07,910contr

1
00:00:00,900 --> 00:00:07,910
contrast as it applies to photography is
the proportion of dark light and

2
00:00:07,910 --> 00:00:12,429
middletown values in an image many of
the adjustments we make involve either

3
00:00:12,429 --> 00:00:18,170
increasing or decreasing contrast in all
of the image or portions of the image so

4
00:00:18,170 --> 00:00:23,070
it's important to understand contrast
you can evaluate the contrast in an

5
00:00:23,070 --> 00:00:28,080
image by looking at its histogram an
image with a greater concentration of

6
00:00:28,080 --> 00:00:34,120
bright and dark tones and fewer
Midtown's has higher contrast while an

7
00:00:34,120 --> 00:00:39,650
image with little or no bright tones in
dark tones in a concentration of

8
00:00:39,650 --> 00:00:45,260
Midtown's has lower contrast low
contrast images will often have what I

9
00:00:45,260 --> 00:00:51,910
call a mid tone peak and higher contrast
images will often have a mid tone Valley

10
00:00:51,910 --> 00:00:58,710
we can use the term gradient and a
Curves adjustment layer to help us

11
00:00:58,710 --> 00:01:04,890
visualize the basics in contrast if I
use the targeted adjustment tool to

12
00:01:04,890 --> 00:01:16,770
darken the darks and lights in the
lights I'm increasing contrast the

13
00:01:16,770 --> 00:01:20,920
gradient now has a greater concentration
of light tones in dark tones and fewer

14
00:01:20,920 --> 00:01:25,790
mid tests and we can see this stone
shift in the histogram

15
00:01:25,790 --> 00:01:35,710
alternately if I dark and the light
towns and lighten the dark tones I'm

16
00:01:35,710 --> 00:01:40,400
decrease in contrast the gradient now
has a greater concentration of Midtown's

17
00:01:40,400 --> 00:01:44,830
and the towns of shifted away from the
lightest and darkest values as shown by

18
00:01:44,830 --> 00:01:49,540
the mid tone peak in the histogram let's
take a look at this principle when

19
00:01:49,540 --> 00:01:55,110
applied to actual photographs the
histogram of this image

20
00:01:55,110 --> 00:01:59,300
indicates that it's low in contrast it
doesn't have any of the brightest and

21
00:01:59,300 --> 00:02:03,340
darkest tonal values most of the tunnel
that is are gathered in a peak of

22
00:02:03,340 --> 00:02:13,190
Midtown's using a Curves adjustment
layer I can darken the darker tones and

23
00:02:13,190 --> 00:02:18,860
lighten the lighter tones resulting in
what we commonly referred to as an S

24
00:02:18,860 --> 00:02:24,260
curve in Photoshop and this increases
contrast the histogram indicates that

25
00:02:24,260 --> 00:02:34,090
the Midtown have been shifted towards
the darker and lighter values the

26
00:02:34,090 --> 00:02:35,640
histogram of this image

27
00:02:35,640 --> 00:02:40,420
indicates that its hiring contrast the
histogram stretches from the darkest

28
00:02:40,420 --> 00:02:44,049
values all the way to the brightest
values instead of a peak in the mid

29
00:02:44,049 --> 00:02:49,480
tones there's Valley using a Curves
adjustment layer I can decrease the

30
00:02:49,480 --> 00:03:00,819
contrast by lightening the dark tones
and darkening the light towns

31
00:03:00,819 --> 00:03:06,719
this is what we call a reverse a skirt
the histogram indicates that some of the

32
00:03:06,719 --> 00:03:11,389
darker tones in later times have been
shifted toward the middle luminosity

33
00:03:11,389 --> 00:03:16,019
mass can be very helpful for creating
better tonal or contrast balance within

34
00:03:16,019 --> 00:03:21,250
an image by targeting adjustments to
specific tonal ranges depending on your

35
00:03:21,250 --> 00:03:26,310
intentions you can either increase or
decrease contrast using luminosity masks

36
00:03:26,310 --> 00:03:35,980
for example you can balance the tones in
a high contrast image by darkening

37
00:03:35,980 --> 00:04:00,010
highlights through a lights mask and
lightning shadows through darks mask

38
00:04:00,010 --> 00:04:04,900
you can also increase contrast in low
contrast images by lightening the

39
00:04:04,900 --> 00:04:13,680
lighter tones through lights mask

40
00:04:13,680 --> 00:04:25,040
and darkening the darker tones through
darks mask

41
00:04:25,040 --> 00:04:31,620
so the basics are that lightning light
tones and darkening dark tones increases

42
00:04:31,620 --> 00:04:37,130
contrast while darkening light tones and
lightning dark tones decreases contrast

43
00:04:37,130 --> 00:04:42,430
understanding the principles of contrast
and recognizing one image needs in

44
00:04:42,430 --> 00:04:46,850
regards to contrast can help you choose
the correct combination of luminosity

45
00:04:46,850 --> 00:04:51,150
mask an adjustment in the following
chapters you'll see several examples of

46
00:04:51,150 --> 00:04:52,350
these principles in action

結果 (中文) 1:

100:00:00，900--> 00:00:07，910它适用于摄影是的对比比例的暗光和200:00:07，910--> 00:00:12，429米德尔敦值图像中的很多我们做出了调整涉及要么300:00:12，429--> 00:00:18，170增加或减小对比度的所有图像或图像部分的所以400:00:18，170--> 00:00:23，070它是重要的是理解对比你可以评估中的对比500:00:23，070--> 00:00:28，080通过看其直方图的图像与更集中的图像600:00:28，080--> 00:00:34，120光明和黑暗的色调和更少市中心的具有更高的对比度，同时700:00:34，120--> 00:00:39，650在很少或没有明亮色调的图像在浓度的暗色调800:00:39，650--> 00:00:45，260市中心的具有低对比度低对比度的图像往往会有什么我900:00:45，260--> 00:00:51，910打电话给中期口气峰值和更高的对比度图像将经常都有中音调谷1000:00:51，910--> 00:00:58，710我们可以使用术语梯度和曲线调整图层来帮助我们1100:00:58，710--> 00:01:04，890可视化基本与此相反，如果我使用的有针对性的调整工具1200:01:04，890--> 00:01:16，770变暗在明暗我在提高对比度的灯1300:01:16，770--> 00:01:20，920梯度现在有更大的浓度浅色的暗色调和更少的1400:01:20，920--> 00:01:25，790测试中，我们可以看到这块石头在直方图中转移1500:01:25，790--> 00:01:35，710或者如果我黑暗与光明城镇和减轻我的暗色调1600:01:35，710--> 00:01:40，400现在减少相比之下渐变有较为集中的市中心的1700:01:40，400--> 00:01:44，830和城镇的转移远离最亮和最暗的值所示1800:01:44，830--> 00:01:49，540中间色调峰值直方图中让我们看看这一原则时1900:01:49，540--> 00:01:55，110应用于实际的照片此图像的直方图2000:01:55，110--> 00:01:59，300指示它已低相比之下它没有任何的最亮和2100:01:59，300--> 00:02:03，340最黑暗的色调值大多数的隧道那就是聚集在一个高峰2200:02:03，340--> 00:02:13，190市中心的使用曲线调整我可以变暗暗色调的层和2300:02:13，190--> 00:02:18，860减轻导致的浅色调什么我们俗称为 S2400:02:18，860--> 00:02:24，260在 Photoshop 和这增加的曲线直方图的对比表明，2500:02:24，260--> 00:02:34，090中城已转变态度，更黑暗、 更轻的值2600:02:34，090--> 00:02:35，640此图像的直方图2700:02:35，640--> 00:02:40，420指示，其招聘对比从最黑暗延伸的直方图2800:02:40，420--> 00:02:44，049一路到最亮的值值而不是峰值在中期2900:02:44，049--> 00:02:49，480有声调的谷使用曲线调整图层可以减少3000:02:49，480--> 00:03:00，819被闪电暗色调的对比和暗光城镇3100:03:00，819--> 00:03:06，719这就是我们所谓的反向一条裙子直方图显示一些的3200:03:06，719--> 00:03:11，389深色的色调，在以后的时间里一直转向中间亮度3300:03:11，389--> 00:03:16，019大众可以创建非常有帮助更好地色调或对比内的平衡3400:03:16，019--> 00:03:21，250通过针对调整图像特定的色调范围，取决于你3500:03:21，250--> 00:03:26，310您可以增大的意图或降低对比度使用亮度面具3600:03:26，310--> 00:03:35，980例如你可以平衡的声调高对比度图像的变暗3700:03:35，980--> 00:04:00，010强调通过一个灯面具和通过深色面具闪电阴影3800:04:00 010--> 00:04:04，900您还可以增加在低对比度对比图像被闪电劈3900:04:04，900--> 00:04:13，680通过灯面具的浅色调4000:04:13，680--> 00:04:25，040和暗色调变暗深色面具4100:04:25，040--> 00:04:31，620所以基本是那闪电光音调和变暗的深色调增加4200:04:31，620--> 00:04:37，130同时变暗光色调对比和闪电暗色调减小对比度4300:04:37，130--> 00:04:42，430理解对比的原则并认识到一个图像的需要4400:04:42，430--> 00:04:46，850问候对比可以帮助您选择正确的亮度的组合4500:04:46，850--> 00:04:51，150面具在以下调整你会看到的几个例子的章节4600:04:51，150--> 00:04:52，350这些原则在行动

結果 (中文) 3:

1
00:00:00900——> 00:00:07910
对比适用于摄影是
比例光线暗，

2
00:00:07910——> 00:00:12429
米德尔敦值图像中的许多
调整我们涉及到

3
00:00:12429——> 00:00:18170
增加或减少对比度的图像或所有
部分的图像

4
00:00:18170——> 00:00:23070
重要的是要明白对比
可以评价对比在

5
00:00:23070——> 00:00:28080
图像通过查看直方图的
图像用较大浓度的

6
00:00:28080——> 00:00:34120
亮与暗的色调和更少的
市中心的有更高的对比度，而

7
00:00:34120——> 00:00:39650
图像与很少或没有明亮的色调
暗色调在浓度为8


00：00:39650——> 00:00:45260
市中心的低对比度的图像对比度低
经常会有什么我

9
00:00:45260——> 00:00:51910
叫中间调峰和更高的对比度
图像往往会有一个中间色调的山谷

10
00:00:51910——> 00:00:58710
可以使用术语梯度和
曲线调整层来帮助我们

11
00:00:58710——> 00:01:04890
可视化基本相反如果我
使用有针对性的调整工具

12
00:01:04890——> 00:01:16770
变暗的黑暗和光在
灯我增加对比

13
00:01:16770——> 00:01:20920
现在有一个更大的浓度梯度
光调暗色调和更少的

14
00:01:20920——> 00:01:25790
中间试验我们可以看到这石头
移直方图中

15
00:01:25790——> 00:01:35710
或者如果我黑暗与光明
城镇和照亮黑暗的音调，我

16
00:01:35710——> 00:01:40400
对比度下降的梯度现在
具有较高浓度的市中心的

17
00:01:40400——> 00:01:44830
和城镇转移远离
轻和黑暗的值如图所示

18
00:01:44830——> 00:01:49540
中间色调直方图的峰值在我们
把这一原则一看时，

19
00:01:49540——> 00:01:55110
应用到实际的照片，这个形象

20
00:01:55110的
直方图——> 00:01:59300
表明它是低对比
没有最亮和

21
00:01:59300——> 00:02:03340
黑暗的色调大多数的隧道
，聚集在

22
00:02:03340高峰——> 00:02:13190
市中心的使用曲线调整
层我暗暗色调和

23
00:02:13190——> 00:02:18860
点亮打火机色调造成
我们通常称为的

24
00:02:18860——> 00:02:24260
曲线PS图象处理软件，这增加
对比直方图表明

25
00:02:24260——> 00:02:34090
市中心已转向
黑暗和轻价值

26
00:02:34090——> 00:02:35640
直方图的图像

27
00:02:35640——> 00:02:40420
表明其招聘对比
直方图从黑暗的

28
00:02:40420——> 00:02:44049
值的所有的方式来代替一个峰中

29
00:02:44049——> 00:02:49480
音调有使用曲线
谷最亮的
值调整层我可以降低

30
00:02:49480——> 00:03:00819
对比以减轻暗色调
和昏暗的光

城镇31
00:03:00819——> 00:03:06719
这个我们称之为反裙子
直方图显示的一些

32
00:03:06719——> 00:03:11389
暗色调在稍后的时间已经
移向中间亮度

33
00:03:11389——> 00:03:16019
质量可以创造
色调或对比平衡的

34
00:03:16019——> 00:03:21250
图像通过调整色调范围
具体取决于你的

35
00:03:21250——> 00:03:26310
意图你可以增加或降低亮度对比
使用口罩

36
00:03:26310——> 00:03:35980
为例如你可以平衡
音调更好很有帮助高对比度的图像变暗

37
00:03:35980——> 00:04:00010
集锦通过灯罩和
闪电阴影通过黑暗面具

38
00:04:00010——> 00:04:04900
也可以增加在低对比度的图像的对比
减轻

39
00:04:04900——> 00:04:13680
打火机色调通过灯罩

40
00:04:13680——> 00:04:25040
和深暗色调通过
深色面具

41
00:04:25040——> 00:04:31620
所以基本是闪电光
色调和暗暗色调增加

42
00:04:31620——> 00:04:37130
对比而昏暗的光线的色调和暗色调的对比
闪电降低

43
00:04:37130——> 00:04:42430
理解的原则，对比
与识别

44
00:04:42430图像需求——> 00:04:46850
关于对比可以帮助你选择
光度

45
00:04:46850正确的组合——> 00:04:51150
罩在下面的
章你会看到

46
00:04:51150几个例子——> 00:04:52350
这些原则在行动
调整