What are the pros and cons of using an optical trigger for external lighting?
I have been reading up on the different kinds of lighting kits out there. I read about using optical triggers for external lighting kits. This would allow me to use my on-camera flash (or a mounted flash) without having to invest in TTL compatible parts. I use a Nikon d50 which doesn't support that out of the box.
What are the pros and cons to using this method of triggering external lighting?