If you're interested in shooting indoor studio portraits but have never done it before, one of the major challenges you’ll face is creating and controlling your lighting. When working with strobes, you need to understand how to adjust your power levels, and even then, you won’t know how the light is going to look until after you’ve taken the shot.
Continuous lighting is easier in this respect, as it allows you to see the quality of light falling on your subject before you take the shot. But the problems with many continuous light systems is that you can’t easily make adjustments to power levels the way you can with strobes, and if you’re using Tungsten lamps (bulbs), you can’t shoot in mixed lighting situations where there is daylight without experiencing color imbalance.
With the advance of variable daylight-balanced continuous lights, however, both of these limitations can be eliminated.