Tweaking settings for high-contrast lighting

…Our final image is really starting to come together, but as I look at it,…I feel like it's lacking some contrast.…The grey backdrop and…now the grey floor with a reflection is just a little too muddy for me.…I'd much prefer a more high-contrast, black backdrop.…In this video we're going to try and eliminate our backdrop, but…we may have to use some special tricks, including something called the Compositing…tag in order to get good-looking refractions along with those reflections.…Go ahead and open up your Contrast Scene file and…use your Render Region tool to render this little edge near your bottle.…

Let's see what happens when we turn off our backdrop.…I'm just going to render again.…And I see that when I go to the black backdrop,…I no longer get a very pretty-looking liquid.…And that's because most of the color from our liquid was…coming from refracting the white backdrop behind it.…So we need to come up with a solution that allows us to…keep our backdrop refracting through our object, but not showing up to the camera.…