I've decided to start getting into lighting.. for the past year or so I just depended on natural lighting, but I've been experimenting with flash and other light sources... I've got a photo shoot coming up in about a month, and I have no fear that I can get good pictures (as I've been doing this for a while and getting nothing but good results and happy customers) but I want to start trying new stuff with my clients (i.e. lighting tech) I'm wondering what the difference is between a normal umbrella and a shoot through umbrella...I guess essentially what I'm asking is, can I buy a normal white umbrella hack off the handle and stick it in front of my flash, or is there something about the 20-30+ dollar umbrellas you get at a photo store that makes them... well worth 20-30+ dollars? maybe I should put this post in beyond the basics?? but I guess its beginner lighting for me.. but thats not a section..