I went home for Christmas this holiday. I was talking cameras with my brother and he was showing me his speedlight 600 for his Nikon, and I noticed the contacts matched mine, so I thought why not see if it works, so I did. It does actually work. But I don't know enough about them to know if had full functionality or not. Will I be able to use the "speedlight" with a remote trigger? on my Canon? Not sure how the sensors work on them, I know nothing about them. The reason I ask is that my brother is an RCMP officer and gets good discounts on Nikon products, as Nikon sponsors Police in Canada. So he can get me a speedlight for quite a bit off retail. I don't know a whole lot about speedlights or speedlite's but I have seen someone use the slave flash and I thought that it was awesome, and would definitely help me in my photography. I woud like to use it as a fill fash. I suppose I could go to a camera store and check it out, but I feel a bit awkward trying out flashes with no intention of buying them. "hey can I see if this works, so I can get my brother to get me a discount, somewhere else?" :blushing: If I had known he could get me discounts on Nikon products I probably would have went Nikon instead of Canon :er: too late now.