What’s the Difference? is a series of lighting tutorials. Each article responds to a single question. In this post, Jared Platt explains the difference between using a green gel and no gel.
In my last post, I detailed the process of using color correction gels to match the colors of various light sources. It that case, we matched the flash (which is a slightly blue light) to overcast daylight (which is much more blue). Then we went the opposite direction and intensified the blue in the sky, by using a warm gel on the flash. If you haven’t read it, take a look, it is worth the read. Throughout the shoot, we nailed four variations that were are great, so the selection between them would be based on individual preference.