Exterior Daylight Scenes In earlier chapters, we dealt with sunlight and its effect on indoor locations. Locations that may be lit by one or more different incandescent, fluorescent, or vapor discharge lamps may also contain large or small window areas that add yet another color temperature to the mix.You will recall that it is necessary to decide which source is the most dominant. Make that your standard, and then color-correct all other sources to it.When you shoot outside during the day, there is little question about the dominant source or what the standard will be.The problem is that the sun is a tough act to follow or even keep up with.