I'm going to be in Vienna and Prague and need some advice re electrical converters/adapters -- especially with regard the Canon battery charger.
Any suggestions as to make and models?
As regards adaptors, as long as they have the pins in the right place, it doesn't really matter. You can get universal gadgets which can be adjusted to fit different sockets and, as francois said, they're available at a price from airport shops.
One tip, though: do make sure that your American kit is happy with a 240V supply. I once failed to check that and the power supply for a ring flash I'd bought in the States made a very loud bang and a very pretty flash when it blew up in my kitchen back home.
Jeremy