Join Tim Grey for an in-depth discussion in this video Selecting by luminosity, part of Photoshop CS6: Selections and Layer Masking.
I find with many images, I want to apply several adjustments to only the brightest …or only the darkest areas of an image. And in those types of situations, I'll …use a selection technique that allows me to create a selection based on luminants …in the image. Let's take a look at how it can be done. …This technique involves destroying some pixels, and so I want to work on a copy …of my background image layer, not the background image layer itself. …To create that copy, I'll go ahead and drag the thumbnail for my background …image layer down to the create new layer button, the blank sheet of paper icon at …the bottom of the layers panel. This will create a background copy that I …can use as the basis of this technique. Right off the bat, I'm going to change …the opacity for this layer to 50%. You can use the popup slider at the top …right of the layers panel in order to adjust the opacity, but as you do so, …you'll notice there's absolutely no change in the image at all, and that's …because I've reduced the opacity of my background copy layer.…
- Anti-aliasing and selections
- The case for not feathering selections
- Adding, subtracting, and intersecting
- Inverting a selection
- Mixing and matching selection tools
- Advanced selection techniques
- Creating composite images
- Applying targeted adjustments
Skill Level Beginner
1. Basic Concepts
2. Selection Tools
3. Advanced Selection Techniques
4. Creating Composite Images
5. Applying Targeted Adjustments
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