Join Bert Monroy for an in-depth discussion in this video Explaining channels, part of Bert Monroy: The Making of Times Square, The Tools.
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Channels are a very important part of Photoshop.…It is a way of going in there and being very selective of how something is going…to be applied, that how being anything like filters or colorizations--whatever it…is you want to do, you apply it in a very specific way.…Let's first look at what the channels really are.…I have here one of my older images, and I'm going to use this to explain the…alpha channel itself.…When you select something, say we select something like this, you know that…anything you do is going to happen only inside that area.…
So if I go in there and start painting, let's just say we're going to go and…paint with the paintbrush and make it nice and big…so we can really see what we're going to be doing here, and when we start to…paint, it only happens inside that area right there,…right? Nothing else gets affected.…Well, that selection is volatile.…When you deselect it, it's gone. But if you save that selection that selection,…that selection becomes a channel, an alpha channel to be exact.…
In this installment, The Tools, Bert demonstrates how he uses the brushes, filters, and textures in Photoshop to create everything from the trees in Central Park to the billboards on Broadway, and shares his techniques for keeping his project organized with layers and groups. He also touches on the importance of channels and channel calculations, and how the evolution of the tools in Photoshop from CS3 to CS5 shaped his work.
- Making a chain brush
- Understanding the layers in lights
- Using the 3D tools in Photoshop
- Using layer styles
- Creating wood and fabric textures
- Applying a layer mask
- Linking layer masks with layer styles
- Understanding channels