This is misleading. Banks put a fee on foreign transactions, many do this even if the transaction is in the card's native currency.
The card companies always add a margin to FX conversions, usually in the 0.5% range. This is fairly benign since the market rate can move between the transaction and the settlement, so sometimes you save money.
The card companies always add a margin to FX conversions, usually in the 0.5% range. This is fairly benign since the market rate can move between the transaction and the settlement, so sometimes you save money.