Software Company:
Digital Anarchy
I was really impressed during the online demo Joe gave on this. It seemed easy to follow, as most of these demos do when you are just watching. But like most demos, when I personally try to put them into practice, it's like I've never turned on a computer before. So this has taken me a while to get to the result you see below. It's far from what I know that this plug-in can do, but I suppose it is only limited by who is doing the plugging, thus you get my take on Primatte Chromakey. Lucky you.
I first found this little kitty on a solid background.

Next, I turned it into a smart object and then selected Primatte under the Filter menu. Primatte has a one-step AutoMask button that eliminates the traditional 3-step process of removing a chromakey background: 1. Setup: This is where you select the color you are wanting to go bye-bye. With my image I would have dragged a tiny box around some of the blue background; 2. Clean Background; and 3. Clean Foreground.
You have an option to select for AutoMask to always be on or not. My AutoMask button was on in this case.
Here, is what the initial Comp looked like.

Next, let's see what the cat looks like in Mask View.

You then use the Spill Sponge or Spill Minus. You sponge it if you want more to be masked out, and minus if you want less. What you are trying to achieve here is your subject to be opaque (white) and the black background represents what will be transparent. You can either use a box or point selection tool to adjust your mask as needed. You can click back and forth to check out the Comp view and see how it's cleaning up. When you are all good with it, or good enough with it, then click Ok. There will still be some things you will still have to adjust in Photoshop.
And back in Photoshop Land you are again. Now, it's time to add in the background that you want to drop your image in. This kitty cat wanted to check out a barn at Talon Winery.

Obviously, seeing an oversized kitty cat at the barn would have scared some folks, so let's adjust the sizing shall we?

That's mo' betta. But still needs some work.
After much tinkering around and filtering filters, adjusting adjustments, here is my end result.

No, I'm not completely happy with the final piece, but considering how many hairs from my head that I've pulled out to get to this point (like I said, it seemed so much easier when I was watching Joe do all the work), and I didn't want to end up being bald like my Mister, I say c'est la vie. For my first time trying this, I don't think it's too terrible. And considering how much I'm ickly allergic to kitty cats, I hope you can appreciate my efforts.
Overall, this is a really snazzy plug-in. But if you are slightly unPhotoshoppy or quasi-newbie-intermediately Photoshoppy like myself, it's gonna take lotsa practice and lotsa patience. In fact, it was taking me such a very long time to figure it out that this cat came fiddling out of the barn with a pair of bagpipes under her arm! Or maybe that was just my cue that I had been staring at my screen too long?
{For those of you that missed it, that was my shout out to Mother Goose.}