I am familiar with the L*a*b* color system and color values as, for example, described here Understanding Photoshop color modes I just opened a photo in RAW format in Photoshop and chose Image > Mode > Lab Color… Instead of RGB, you’ve now got Lightness, a and b. The colors will usually be stretched over most of the histogram. You can actually make the colors in your photos look more vibrant and lively without moving the saturation slider and going over the top. I would like to acknowledge Dan Margulis as a tremendous thought leader on the use of LAB color in Photoshop, and as an inspiration for many of the techniques I’ve used in this demo. There is no set amount to move it, but if you are looking for a little guidance drag it until the Input number reads -90. For the curves adjustment layer you just created, click on the eyeball. It is more than just an increase in saturation – it’s stretching the color palette. Select the A channel. However, while each color gets its own channel in RGB, colors share channels in LAB (two per channel). Tweet. In this scheme, the camera or computer starts with these three colors and then combines them to create a whole host of different colors. Some of you may know that in RGB color mode we have three color channels: red, green and blue. What is the actual purpose of it? It uses three values (L, a, and b) to specify colors. Having the colors of your image all bunched up in the middle of the histogram means that you have lots of room to scoot in the endpoints of the histogram and effectively stretch the color palate. In the Adobe Color Picker and Color panel, the a component (green-red axis) and the b component (blue-yellow axis) can range from +127 to –128. Once you’ve converted your image, open the Channels panel. In Affinity Photo, Lab editing is achieved by changing the document's Colour Format to "Lab (16 bit)" In ICC profiles, the "Lab color space" used as a profile connection space is CIELAB D50. shows aspiring photographers simple, practical steps for improving their photos. Explore the tools, techniques, and creative possibilities of Lab Color in Adobe Photoshop. That is because LAB is such a ridiculously broad color space that all the colors you and I would consider “normal” are bunched up in the middle of the histogram. But they’re not the only color spaces. In RGB mode you would see the Red, Green, and Blue channel. Even though Lab Colour space is not popular amongst photographers, you should definitely learn how to use it. The free tips, explanations, and video tutorials he provides are sure to take your photography to the next level. You’ve probably heard of CMYK and RGB color spaces. Now it is time to see the “before” and “after” pictures of your image; this is one of the benefits of working with layers. Another example is CMYK (cyan, magenta, yellow, black) which is a color space used for printing, combining those four colors in ink to create the colors in a print. I know how to replace a color in Photoshop (by going to image -> adjustments -> replace color and selecting the color etc.) From the drop-down, choose “LAB color.” That’s all there is to it. The left side of the picture is an unadjusted Raw file. What you are going to do here is exactly what you just did in the step above, but this time you are going to do it in the B channel. Make sure to check out his website and follow his YouTube channel. Described as the most advanced, inspiring, insightful, maddening, demanding, and illuminating educational effort ever created for Photoshop, the first edition of Photoshop LAB Color become the ultimate source of information on Photoshop LAB color correction for nonexperts to advanced users. Now, grab the right endpoint and pull it to the left the exact same amount that you moved the left endpoint to the right. That’s it, you now know the LAB color move. The “A” doesn’t actually mean anything. It represents the relative brightness of the pixels without regard to color. 'RealPlayer'], ['rmockx.RealPlayer G2 Control',
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