Anyway, my lovely friend Eve got a lomo ring flash for Christmas, and it works on every hot shoe. I stuck it on my 5D Mk II and played around a little bit while my friends played music. It's fun to play with different levels of exposure and although the results aren't what one typically wants with flash photography, I kind of like them. I still prefer shooting ambient light, but I wouldn't mind having one of these for myself one day.
