Took these down at the local park the other night. I'm finding that with a max sync speed of 1/160s with my 5d2 and cheap triggers I can only get good well lit shots at night or late evening. C&C on these and let me know what I could do better while I still have the opportunity to try. I know that another flash would help but for now I can only work with what I have. Gear - 5d mk2, 28mm 1.8 Sigma, 430EX with yongnuo triggers 1. 2. 3. 4. 5. 6.