So, I finally decided to take a little more control of my lightning and I want to get a decent flash for my Canon 40D. However, I've never used lightning much, and I don't know much about what are some good flashes to get. Any help or suggestions people have would be more than appreciated, because right now I'm fairly in the dark (oh god, I just realized what a bad pun that could be). Here's what I'm working with: Canon 40D 300mm f/4L IS 28-135mm f/3.5-5.6 IS 50mm f/1.8 24mm f/1.4L I typically like to take close shots of cats/flowers/etc, some distance shots of birds/wildlife/etc, along with some action shots for martial arts/hockey/other sports, and normal shots of family and the life. Yes, I know that's a broad list , sorry.