Although the sales assistant was very informative I was sold a pre-owned Canon 580ex flash unit that was faulty. The pull out light diffuser was snapped and could not be accessed, the unit also did not respond once turned on. I had a job the following day which required this light, thankfully I had time to return it and exchange for another otherwise I would have looked very embarrassed in front of my clients. The other items I purchased were all fine, however this was my first time using Calumet and I'm incredibly disappointed that such an esteemed company could sell me something that was so clearly broken. The sales assistance promised to follow up my complaint, three weeks on and I have received no contact.