Color grading, adding grain, and working with lens distortion

…There are a few items left that we can use in our composite to…put some icing on the cake here and really make the shot look final.…The first is going to be lens distortion.…If you recall, back in chapter two, when…we solved our camera it created a lens distortion…mode essentially flattening out the back plate, and adjusting…or compensating for the lens distortion in the camera.…What we're going to do, is we're going to take that…lens distortion node, and apply the inverse of it to our flag.…

This will make a flat undistorted CG element appear like it's…sitting in the footage better because the lens distortion now, will match.…Let's push our node graph to the side here.…Go to File, Import Script.…We're going to navigate to the exercise files in chapter two and…we're going to pull in the script that contains the Lens Distortion Node.…Now, we only need this one node here.…So let's just disconnect it from everything else.…And…we'll bring it over here, and we'll add it to the A side of our composite.…

That's the flag.…