715 Contour map + arbitrary map

- [Instructor] In this movie, I'll show you how to…combine a contour map as we're seeing here,…along with an arbitrary map, which you achieve…using a curves adjustment layer.…And we'll also see how an arbitrary map…compares to a gradient map, as we saw in the previous movie.…Now the interesting thing about this…is both of these effects are relying…on exactly the same colors,…as I'm gonna demonstrate in just a moment.…However, we end up achieving a differently…colored composition, and that's because…arbitrary maps work on a channel by channel basis,…whereas gradient maps affect the composite image.…

And a thing to note here is that gradient maps…amount to a more modern approach.…They're a lot more straightforward as well.…Whereas gradient maps are old school,…but they provide you with a little bit…of additional flexibility.…And we're actually gonna see how the two…compare side by side.…So I'm gonna go ahead and switch over…to this gradient demo file right here,…in which we have a black to white horizontal gradient…