We can use exactly this type of overlaying to create the desired black and white effect with the help of channel calculations. By overlaying all three channels and blending the colours, the finished coloured image is obtained. The same is true for the colour channels green and blue in the case of an RGB image. If you click the red channel, for example, all red portions in the image will be displayed in black. But these are only the colour portions in the image. When you do so, you will see that a black and white image is created just by clicking on the corresponding colour channel. You can click through the individual colour channels. In a CMYK image, the channels are cyan, magenta, yellow and key. In an RGB image, the channels are red, green and blue. It shows the different colour channels depending on the colour space of your image. To do so, go to the Channels panel next to the layers. In order to understand how the channel calculation tool works, you should first familiarize yourself with the colour channels in Photoshop. Original image Black and white effect with grayscale Black and white effect with channel calculation We therefore choose channel calculation in this tutorial to create a high-contrast black and white effect in Photoshop. This method allows creating clean contrasts also in adjacent image areas with little differences. So in order to make detailed image information stand out in black and white as well, it is a good idea to blend different colour channels. These areas are usually rendered much too bright and undifferentiated with the grayscale method. For instance, this may concern areas where the brightness value differs only slightly in two different areas of the image. The result usually seems fine at first glance, but a closer look reveals that key image information got lost with this method. To obtain a black and white effect with as few clicks as possible, open the image in Photoshop and select Image > Mode > Grayscale. In this tutorial, we will use the channel calculation tool which allows you to blend different colour channels. Photoshop provides more than one technique for this type of image editing. A lot of different moods and atmosphere can be created with black and white. With this effect, it is the small details and specific actions that make all the difference.Ĭonverting a photo to black and white in Photoshop may sound simple but there is much more to it than meets the eye. Moreover, we will compare the results of channel calculation with a simple conversion to grayscale. In this tutorial, we will show you how to use channel calculations to create a high-impact black and white photo with just a few clicks. Black and white images have to be expressive and high in contrast to create the desired impact.
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