Protecting details with an edge mask

In this movie, I'll show you how to create an edge mask.…In our case we'll be using it to protect the…so called edges, that is good detail inside this image.…For example, I'll go ahead and turn Dust & Scratches off, it's…very important that you do this if you're working along with me.…It may take a moment for Photoshop to re-render the filters.…And you'll see those little hairs along the forward leg come back.…And we have better detail inside the face and elsewhere, as well.…So, we need to be able to mask away the…effects of these filters so we can retrieve that good information.…

So, with Dust & Scratches off, you want to switch over…to the Channels panel and then go ahead and grab your detail…channel, which is the Green channel, and drag it and drop…it onto the little Page icon at the bottom of the panel.…And that goes ahead and creates a copy of…that channel so we can transform it into a mask.…I'll go ahead and rename this channel edge mask and…then step one is to go to…Filter>Stylize>Find Edges which will go ahead and…