So, for portraits or videos etc - everyone always says to get some light, ie softboxes. Okay, so you search softboxes online at your favourite webstore and find that no two softboxes are the same:
We have softboxes in different shapes and sizes, and in with different number of 'heads'. A head being a fixture for a single bulb. Some softboxes fit just one bulb, others fit as many as five bulbs.
So this means that some softboxes will be incredibly brighter compared to others. For example, they ship with 135W CFLs included, advertised as 675W each - mulltiply that by 5 bulbs in a single box and this seems to be a bit excessive?
Is there a rule to dictate how many heads are generally needed in a softbox?
I know I could always not add all the bulbs, or move the softbox further away - but space can be limited, and the head count can affect price.