Quote from: ajcgi on May 23, 2016, 08:54:31 AM
No, it will make everything brighter. Just swing your spotlight away from the camera (still pointing towards the cave. Try to get a rimlight effect on the rock.
Additional lightsources are perfectly valid.
[edit] See attached image for what I'm getting at. If you raise the environment light you'll get the light in the cave, but you'll also get a ridiculously bright everything else. If you light the cave as though it's the sun, you'll get the effect of the sunlight without the blown out exposure.
Additional lightsources are perfectly valid if you're looking for some sort of a not necessarily natural artistic look. I know that additional light sources are still used even in modern movies (although way more subtle than let's say 50 years ago - thank god), but a lot of times it's very obvious. It may work to get a quite natural result using this method, if you're very, very careful, but it's really tough!
And sure, you'll get a ridiculously bright everything else if you increase the environment light's multiplier ridiculously! Of course you shouldn't use a value of 100!!!!!
Yes, it will make everything brighter. But if you're really careful, it won't look too bad on the area that's not meant to be brighter. To me the lighting by an additional light source always looks like what it is: an additional light source.