尽管它是第一种摄影，但黑白摄影仍然是一种流行的审美。虽然Instagram等一些平台提供了可帮助您制作黑白图像的预设，但其他平台则没有。这就是Adobe Photoshop CC等图像编辑程序的用武之地。
在本Photoshop教程中，我们将向您展示六个工作流程，您可以使用(Photoshop)Mac或Windows上的Photoshop将任何彩色图像转换为黑白图像。
如何使图像(Image Black)变成(White)黑白
以下是将彩色图像转换为黑白的六种方法。
方法一：使用灰度
Photoshop 现在具有自动将图像转换为灰度的功能。这种方法的问题是它具有破坏性，因此您无法在转换后调整每种颜色的饱和度和亮度。
要使用此功能：
- 打开要转换的彩色照片。
- 单击图像。
- 单击模式 > 灰度。
- 将打开一个对话框，询问您是否要丢弃颜色信息。选择放弃(Select Discard)。
注意：您也可以通过单击模式(Mode)旁边的下拉菜单并选择灰度来从“(Grayscale)属性(Properties)”面板访问此功能。
方法 2：使用黑白(Black)调整图层(White)制作(White Adjustment Layer)黑白图像(Image Black)
将图像转换为(White)灰度的第二种方法是使用黑白(Black)调整图层。此方法将使您能够保留所有颜色数据，这意味着您可以调整颜色值以获得所需的外观。为此：
- 打开要转换为黑白的图像。
- 单击图像。
- 选择Adjustments > Black>
黑白。(White)
- 如果您对图像的外观感到满意，请单击“确定”。否则(Otherwise)，您可以通过使用颜色滑块来微调照片。
方法3：使用Hue/Saturation Adjustment Layers
使用Hue/Saturation调整工具是另一种非破坏性方法，可让您保留颜色数据。
- 在Photoshop(Photoshop)中打开彩色图像。
- 单击调整选项卡。
- 选择Hue/Saturation。这将添加一个Hue/Saturation调整图层，因此您的原始照片不会受到影响（即，颜色数据被保留）。
- 在下拉菜单中，选择Master。
- 将饱和度(Saturation)滑块滑动到 -100。
注意：调整(Adjustment)功能可让您分别对每个颜色通道进行去饱和处理，以将选择性着色效果(selective coloring effect)应用于黑白照片。为此，只需让特定颜色通道保持不饱和状态（例如洋红色）。额外(Bonus)提示，您可以使用颜色选择工具从图像的一部分中自动选择您想要的颜色。
方法 4：使用梯度图
渐变映射(Gradient Map)工具根据亮度值将彩色图像转换为灰度。使用此效果，较暗的区域将变为深灰色，而较亮的区域将变为浅灰色。
要使用此工具：
- 在Photoshop(Photoshop)中打开彩色图像。
- 选择图层。
- 在下拉菜单中，单击New Adjustment Layer > Gradient Map。
- 单击确定。
方法 5：使用通道混合器
通道混合器(Channel Mixer)是另一个功能，它使用颜色数据根据您的喜好创建黑白图像。此工具可让您在拍照时模拟使用滤色器的效果。
- 在Photoshop(Photoshop)中打开彩色图像。
- Select Layer > New Adjustment Layer > Channel Mixer。或者，选择调整(Adjustments)选项卡并单击通道混合器(Channel Mixer)调整图层图标。
- 勾选单色。
- 调整RGB滑块，直到您对效果满意为止。
方法 6：使用实验室颜色
Lab Color方法具有破坏性（它会删除所有颜色数据并且是永久性的）。但是，转换为黑白更准确（基于亮度值）。
- 在Photoshop(Photoshop)中打开彩色图像。
- 选择图像。
- 单击模式 > 实验室颜色。
- 选择通道面板（在(Channels)图层(Layers)面板旁边）。如果未显示，请单击Windows > ChannelsChannels。
- 选择亮度通道。
- 单击图像 > 模式 > 灰度。
三下点击复古照片
(Photo)Photoshop、Camera Raw和Lightroom等(Lightroom)照片编辑工具现在包括许多用于黑白转换的工具和数百种其他简单的图像修改(easy image modifications)工具，可帮助您完全按照自己喜欢的方式制作照片。
How to Make an Image Black and White in Photoshop
Eνen though it was the first kind of photography, black and white photography remains a popular aesthetic. While some platforms like Instagram provide presets that help you make an image black and white, others do not. This is where image editing programs like Adobe Photoshop CC come in.
In this Photoshop tutorial, we’ll show you six workflows you can use to convert any color image to black and white using Photoshop on Mac or Windows.
How to Make an Image Black and White
Here are six methods to convert your color image to black and white.
Method 1: Use Grayscale
Photoshop now has a feature that automatically converts your images to grayscale. The problem with this method is that it is destructive, so you cannot adjust the saturation and brightness of each color after the conversion.
To use this feature:
- Open the color photo you want to convert.
- Click Image.
- Click Mode > Grayscale.
- A dialog box will open asking if you want to discard the color information. Select Discard.
Note: You can also access this feature from the Properties panel by clicking the drop-down menu next to Mode and selecting Grayscale.
Method 2: Make an Image Black and White Using the Black & White Adjustment Layer
The second way to convert an image to grayscale is using the Black and White adjustment layer. This method will enable you to keep all color data, meaning you can adjust the color values for your desired look. To do so:
- Open the image you want to convert to black and white.
- Click Image.
- Select Adjustments > Black & White.
- If you’re happy with how the image looks, click OK. Otherwise, you can fine tune the photograph by playing with the color sliders.
Method 3: Use Hue/Saturation Adjustment Layers
Using the Hue/Saturation adjustment tool is another non-destructive method allowing you to preserve color data.
- Open the color image in Photoshop.
- Click the Adjustments tab.
- Select Hue/Saturation. This will add a Hue/Saturation adjustment layer so your original photograph won’t be affected (i.e., the color data is preserved).
- In the drop-down menu, select Master.
- Slide the Saturation slider to -100.
Note: The Adjustment feature lets you desaturate each color channel separately to apply a selective coloring effect to a black and white photo. To do this, simply leave a specific color channel unsaturated (for example, magenta). Bonus tip, you can use the color selection tool to automatically choose the color you want from a part of the image.
Method 4: Use a Gradient Map
The Gradient Map tool turns color images into grayscale based on the brightness values. With this effect, the darker areas will become dark gray while the lighter areas become light gray.
To use this tool:
- Open the color image in Photoshop.
- Select Layer.
- In the drop-down menu, click New Adjustment Layer > Gradient Map.
- Click OK.
Method 5: Use the Channel Mixer
The Channel Mixer is another feature that uses color data to create a black and white image to your preferences. This tool lets you mimic the effect of using a color filter when you take a photo.
- Open the color image in Photoshop.
- Select Layer > New Adjustment Layer > Channel Mixer. Alternatively, select the Adjustments tab and click on the Channel Mixer adjustment layer icon.
- Tick Monochrome.
- Adjust the RGB sliders until you’re happy with the effect.
Method 6: Use Lab Color
The Lab Color method is destructive (it removes all color data and is permanent). However, the conversion to black and white is more accurate (based on brightness values).
- Open the color image in Photoshop.
- Select Image.
- Click Mode > Lab Color.
- Select the Channels panel (next to the Layers panel). If it isn’t displayed, open Channels by clicking Windows > Channels.
- Select the Lightness channel.
- Click Image > Mode > Grayscale.
Vintage Photos in Three Clicks
Photo editing tools like Photoshop, Camera Raw, and Lightroom now include many tools for black and white conversions and hundreds of other easy image modifications, helping you make photos exactly how you like them.
