There are many advantages to using studio lights over constant lighting.
The ability to freeze a moving subject is one of the biggest advantages.
Constant lighting can generate an uncomfortable amount of heat during a shoot.
Adequate constant lighting can cause the subject to squint and contract their pupils.
There is a wide range of light modifiers, allowing for many creative affects.
Newer battery powered lights allow for portability.
Newer battery powered lights eliminate the hassle of mains leads underfoot.
Since this is an introduction to studio lighting, we have restricted our lighting to inexpensive yet versatile light modifying equipment.
In effect, we are aiming to show the results that can be achieved with spending as little money as possible with equipment that is easily portable.
We have used one very small umbrella, typical of those supplied with entry level studio light kits.
Then we have used one very large umbrella.
After that we have used two 'brolly boxes' which are umbrellas with a front diffuser.
These create a very similar affect to soft boxes, which are usually more expensive and bulky to store.
Finally, we have used three speed-lights with grids as hair lights, clipped to the top of our background